This is also my experience, crappy Berlin startups that pay poorly and expect you to jump through hoops and work long hours. I switched to contracting and haven't had to do any of these silly tests, I usually discuss the project and my past projects and that's enough. A few times I've been asked to do a take home challenge which I don't mind and actually quite enjoy. Separated from the interview process I find some of the leetcode type challenges kind of fun, like doing a puzzle but they have been of very little practice use to me in my work.