This exact issue shows up when I type in Terminal, and it makes me annoyed every time. I used to have this on my work computer, and through some debugging tool

This exact issue shows up when I type in Terminal, and it makes me annoyed every time. I used to have this on my work computer, and through some debugging tools that are not available publically or on macOS, I was able to track it down to my shell spawning a git process very frequently; until you mentioned this I suspected that this was the case on my MBP as well. Could it be that this is just generally true? I don't remember this on my 2014 MBP, just my new 2019 16" MBP. Supposedly the latter is a more powerful machine. It's gotten so bad that I frequently consider wiping my computer and seeing whether it'll be fixed with a new environment.