I get what you’re saying though. Many folks might only have budgets in the range of $500-800. With any luck, other manufacturers get their shit together.
These are professional tools, you're going to need to invest into hardware to get a good experience - if you value your time at all you'll be spending a good ammount of money on a laptop, high quality chair, good desk, monitor and peripheral.
If you're an amateur or a student then you can afford to wait.
It's like me complaining that my amateur drill overheats on hard surfaces and I can't drill through stuff realiably without cracks - if I need to do a few holes here and there the cheap stuff will do, if I do this for a living I'm expected to have gear that will save me time and improve my results.
Performance is a feature, and it doesn't rank very high past some critical threshold (which is why people switched to VSCode - other features matter more)
On my, 2015 Macbook pro (16 GB RAM)
and my 2012 Macbook pro (2 GB RAM).
Instantly.
Nothing else on my 2012 Mac opens that fast. Not MacVim. Not emacs. Not TextEdit. Not even the terminal.
Sublime Text basically does what you describe above on ANY hardware.
I have one Electon app that I wrote myself and it's pretty fast as well even though it deals with a boatload of things, and I didn't really put any special effort in to achieve that.
Both on my current laptop (which is admittedly a 10th gen i7) and my older one (8th gen i5).
Not to say that Sublime doesn't load faster. I'd almost be surprised if it doesn't. But the whole "Electron apps are slow" trope really needs to go.
Same with Spacemacs. because of the way processes are more expensive on Windows, Emacs/Spacemacs is many order of magnitude slower than it is on *nix (the other places I use it). I tolerate it as I can't live without magit and Org and other staples.
I find the crappy Slack app (another Electron app) is also slow to open, load and update. So much so, I prefer to use their web client in a browser.
Anecdotal, also, but that's two Electron apps which are sluggish on fairly recent (3 years) hardware.