These findings don't merely apply to coding, they're applicable to any type of focus-driven work. Case in point, I use VSCode to type all of my work-related research and writing drafts instead of using Word for the simple reason that the Word UI is cluttered, distracting, and makes writing difficult. By comparison, VSCode is so much more pared down and lets me focus on what's actually important - the content of my writing!
Is feature-creep the inevitable fate of any software environment? As a product gains momentum, I think there's always going to be pressure to add new features to either justify monetization or user retention/growth (and, more cynically, to justify what an employer is paying a team who is staffed on that piece of software).
I do think that FOSS is more immune to this problem. There's no incentive to grow or monetize, and so you end up with software that can be feature-complete for its purpose and left relatively alone (the downside is that there's a lot of half-baked FOSS out there as well!). Hopefully when feature-creep takes over VSCode, someone will fork it and continue the project as-is.