But to each their own - I'm sure someone will be all into "debloating" like the author.
KDE is slow. Fvwm is much faster.
On more modern systems even less so.
I'd like to see a demonstration of that fastness, which translates into tangible usability benefits. Not some synthetic microbenchmarking shit.
I tried it, because I still know FVWM2. Was refreshing for a while, felt good because I still could 'do it', but that's it.
The only things I can imagine profiting from it would be running stuff which is at the limit for your physical RAM, where every wasted Megabyte decides between swapping to death, or running through smoothly. But then there is IceWM, which is good enough for such cases. With the exception of FVWMs excellent handling of large virtual desktops.
My quality of life didn't improve much in the PIV+ era. I can play 4k videos now, but the software is much slower, UIs are ugly and, more importantly, inconvenient because there are no native toolkits anymore, just the browser and it dictates the idioms UI designers can use.
Also I want local-first software which does not pipe all my shite to some shady guys, not unreliable plaintext storages somewhere in over the continent.
I don't want to pay subscriptions for everything. I still can run what I purchased 15 years ago but I don't have the option to own anything in this modern world.