I interpreted this comment as more of a jab at how inefficient are outlook and teams themselves as applications.

I don't know if it's the right interpretation to have, but I kind of agreed with it, considering huge issues I had with teams (curiously some of them are only there for linux users, weird when considering the fact that I only use teams' web page) - not saying I could do better though!

Yeah, what BS. Everyone knows that if you have a book on C, you can always quickly implement git yourself.

I'm unsure what being in engineering has to do with using outlook and teams?

That wasn't my point. But tools like Teams kill more productivity than they enable, at least in my experience. If anything, I was more productive yesterday, because I got disturbed less.