Eclipse and anything based on it can burn in the depths of hell
Cant get your point, eclipse works like a charm.
From my point of view its the absolutly right decision to use eclipse as the base of an IDE. Its an standard. Yes it is complex, you have to invest a lot of time to use all of its features and I understand the one or the other frustration. But, if you spend the time (and nerves 😯) you have very very powerfull tool.
Eclipse is a tool for professionals and ambitious hobbyist and once you learned it, you are ready for all the other eclipse based projects c/c++/java/haskell/rust/ruby/python ...etc etc, with no need to learn IDE features again and again.
To develop an IDE again and again for each little discomfort one has is... sorry - stupid.
Maybe eclipse, for now, is to complex for you.
Try Arduino instead, they have a pretty good STM support and you can have
good results with just some clicks.
Regards