The weirdos crusading against bloat helped keep distros light weight and performant decades on. It allowed a linux distro to fly on older hardware that was bogged down by newer linux versions. The legacy to this day is that WMs like KDE can actually be fairly light weight and there is still attention paid to not using a lot of resources.
Nowadays I feel like the complainers dont even have a consistent definition of what bloat is and it ranges from command line only users who know theyre crazy and niche but speak up anyway, to people who are just upset if a distros ships with basic default tools like an image viewer or something that opens text files or videos, or drivers.
The whole thing is also silly with how much cheaper ram and storage have gotten. Even moreso because the distro and WM isnt the limiting issue. Yes you can still run a KDE based distro with 2gigs of ram, but as soon as you open your web browser and visit the modern internet the dozen high definition images that load in and videos and javascript.
Yeah I’ve definitely run into issues where case sensitivity causes problems. Especially in programs that are cross-functional between Windows and Linux. Like when I recently downloaded some bios files for a Playstation emulator and I spend time figuring out and troubleshooting why they weren’t working until it finally hit me the door McFly it’s cause the file name was in lowercase not uppercase. Than I cared to admit to figure out