That is a wild accusation. I need to install a nightly of Kate and give it another chance, if it's truly as good as you say. Np++ is starting to annoy me, with it's constant reopening of like 50 files every time it's started lol.
Kate recently opens a default start page which I now find annoying. Kate also opens all previously opened files by default.
All of these things are defaults that are easy to override but changing defaults can be annoying, especially when you have been used the previous defaults for more than a decade ...