I'm sure you already know this, but I used to use sublime text and moved to an IDE because of the debugging features. Sublime text and a terminal is great for simple problems, but you'll cost yourself a lot of time doing print statements when you could just use an IDE.
Sublime Text is handy for doing text manipulation and jumping around files. I use it in addition to Xcode for that sort of thing. I know some vim but not enough to use it this way. I hope Fleet is closer to ST in speed than I’ve heard VSCode is sometimes.
I always used ST even after trying VS Code and Atom some years ago, but some weeks ago installed VS Code to try GitHub Copilot and I haven't already gone back.
The integration of VS Code with my C tools are so good that I don't see myself going back.