Our corporate linux machines have exactly the same monitoring software as Windows - even the servers. The performance is still not even remotely comparable. Could be the hooks are more performant on linux, could be the filesystem, maybe the tools are written more sanely... But loading apps, filesystem operations... Everything is still far faster on the linux dev instance. And I have half the ram allocated to that one.

The reason every developer makes their app open at startup, is because the Windows ecosystem doesn't have a good package manager. So every app needs to be its own package manager and check for updates on a timer. So they need to run all the time so they can run that timer.