Software engineering, or maybe CS, is what I wanted. I hadn't even heard the phrase "computer science" when I started university. The total incompetence of the course counselors at the core function of their job contributed to putting me on a path that eventually lead to the ruin of my life.
I did a degree that claimed to contain software development, but was in the IT category - I never learned of the concept of version control (at all), how to use makefiles, exception blocks, performance profiling, or a bunch of other practical stuff.
Now I'm wasting away in an IT support job. I can't blame everything on that, and most of the responsibility for where I am today is on me - especially for not turning it around better after I realised my mistakes, but I feel like the confusion between "IT", "CS", and "Software engineering" definitely kickstarted a path that wasted alot of my most valuable learning time.
Don't trust course counselors - or other people in general.
I was once in your shoes. Same background, same regrettable life choices, same potential future.
If you want to develop, do it. Start by looking at the crap software your company likely pays hundreds of thousands of dollars for and think about how you could do it better. Start by actually trying to supplant it with something of your own creation.
I have a generic degree. All those "practical" things you lament missing out on, I learned by just doing it. But I never had cause to learn what big-o notation was or how to navigate a b-tree...you know, that non-practical knowledge a CS degree would have endowed me with. The lack of such has only stopped me from working at Google. Plenty of other shops are not in the business of recruiting only those who can write the freshest sorting algorithms.
Just don't spend the rest of your life in a job you hate, condemning yourself for being put upon. It takes little effort to invoke large changes.
Some of the best developers, DBAs, system engineers, etc, I've hired had history degrees, math degrees, journalism, EE, etc. The degree itself, for me, is just proof that you finished something important. I care more about what you know, and how well you can learn something new.
I don't think I'm that unique in this respect. The tech shops I've worked in over my career were full of non-CS degreed people. Mostly my experience here, though, is with non tech companies. Things like the IT departments in Healthcare, Travel, Automotive, etc.
I... think it's not so much a matter of 'trust' as you have to understand what people understand. My understanding is that their job is to help you navigate academia, and I'm sure they are competent at that. I can't imagine how they could be good at figuring out what you want to do. That's hard enough to do yourself.
The other thing about higher education is that it's usually not meant as vocational. Now, I'm in IT too, and for that matter, I didn't go to college, so maybe I don't know anything, but my impression is that a good school is about giving you a common intellectual and cultural background, not about actually teaching you how to do your job.
This is to say, after your undergrad, you should be prepared to learn how to do a job that requires a degree, and how to communicate with others who have gone through the same training.
(Personally, I am a little confused as to just what you learn in an "IT" degree; as far as I can tell, they don't give you much math, and on a personal level, the only people I've worked with who had 'IT' type degrees were management.)
Stateside too. I used to get asked to fix printers by friends and associates and in general get treated like a help desk by people all the time because all they know is "Dave works with computers" even when I started working directly with managing software development teams later in my career.
Heck, about 16 years ago when I was working the help desk in a call center I had someone ask me "Hey IT Guy why isn't the water fountain working?" as I was walking out the door. I asked her to wait a moment, poked my head into the office of the facilities maintenance manager and asked him if he could help out.
For some reason that last bit was especially insulting, both being called "IT Guy" instead of being greeted at bare minimum by name, and for the assumption that I somehow knew how water fountains work. I was a frustrated and angry young man then, heh.
Feels good nowadays when people ask what I do "Security and Compliance". I don't get asked to fix printers anymore.
"Hi, I'm Luke, and I fix things."
Not sure why your experience was so different? Sounds like you got a raw deal though.