To be true, I don't use codelobster for now, just maintain package.

About "30 days trial" - this is for Professional edition. After 30 days without registration codelobster will continue to work in "free" mode (i.e. without several plugins).

I have no Professional version, so it's difficult for me to check problem with plugins, that you mention, but anyway, it still possible to use package in "free" mode. I'll add pinned post about this in AUR, may be somebody with Pro version can help with testing.

I have no problems with scaling/fonts/animations, but seems this is not reason for deleting package anyway. If you found a bug -  inform developers.

About "very good free, open source IDE's like vscodium, and also IntelliJ's ... IDE's":
  1. Whether existence of "good" software means, that "worse" software must be removed from AUR? I thought, that no.
  2. Both VScode and IntelliJ products are "bad" for my personal opinion. VScode written over electron. Intellij products are java-based. For my experience "java" means "written overcomplicated, works slowly, eats resources, generates warnings since startup, crashes with giant unexplainable stacktraces from time to time". BTW, Intellij's PHPstorm is '30days trial' without free version.  Sorry for that, main idea is  that different people can have different opinion about best IDE. 
What are negate effects of having this package in AUR? Distribution of closed-source software - right. Something else?