[edit] I’d posted something to go into more detail. But I’ve decided that branch of conversation is not really the way forward.
I’ll just say that the software is not installed by choice, and it does things that people don’t want it to do… so it could be described as malware. But if you want it on your computer, then I guess for you it is not malware. In any case, it doesn’t look like we’re going to agree about this regardless.
I’ve recently discovered and made heavy use of xournal++; for stylus-based note taking.