That hasn’t really been my experience. The computers I own have had windows for multiple years. I tend to install it when first setting up and never again.
The work laptop has good specs but trash performance from day one that I got it. I had a laptop that I gave away that was much lower spec than the work laptop and it ran better in every way, probably because it had none of the bloat.
Windows in my opinion has huge issues in other areas but performance hasn’t been one of them in the last 15 years for me, probably in part because I avoid running any heavy services in the background.