I use an overpowered (for my type of job) modern i7 computer with 32G of ram and modern 1TB ssd.
It still does take several seconds to open start menu, same for calculator. Explorer takes sometimes a minute so I have a different file manager open constantly.
The trick is to combine windows with any type of DLP enterprise software. It consistently delivers this horrible experience.
But aside from poor enterprise setups, try opening win11 start menu on a computer that has internet, just veeery slow. Suddenly you will miss those times of win95 loading start menu icons one by one, with a soundtrack of scrubbing HDD.
I don't miss those times purely because of huge stability differences. 20 years ago or so, systems crashed all the time and filesystems had to be repaired constantly. I even clearly recall how often was a kernel panic on random Linux distro, when you tried early docker.