This is sadly too true. I have seen new libraries becoming popular not because they solved their target problem better in a measurable way than the existing on

This is sadly too true. I have seen new libraries becoming popular not because they solved their target problem better in a measurable way than the existing ones, but because they used [insert fancy tech that is hype right now]. I have seen articles reposted in tech newsletters that were completely bullshit. The last one was about manually cleaning up some weak references because that would magically help performances, without any data to back that up. Performances in general is HARD. There are very few general truths that hold true and many rules of thumb that change rapidly as mobile platforms evolve. Most of the performance optimizations I used to make 5 years ago just don't matter anymore. Measuring the bottlenecks is not that hard but still very rarely made, even in performance articles.