The last two companies I worked for insisted that customer account security was the highest priority, but as soon as I said we needed to stop hiding links to our own website behind Hubspot tracking URLs so we don't train our customers to click links that look like gobbledygook garbage, the marketing team melted down and it became clear where user account security actually fell on the priority list.
I don't think it's always malicious, though. I think most people in most companies just don't realize the risk. Like, I had to explain to my doctor's office why I'm never going to "confirm my identity" by rattling off my DOB and address at the beginning of a call when they called me. I even think of those specific data points as public information anyway and I'm not going to participate in that nonsense. It had never occurred to them that this was risky behavior.
It did make me appreciate my parish priest's method, though. Every quarter or so, he reminds people from the pulpit that he will never email them asking for gift cards or anything of the sort. If the parish needs money for something, he promises he'll ask for it right from the pulpit!