It doesn't matter that much. Some things in programming mater a lot, like consistent indentation and casing. Some things doesn't, like perfectly formatted commit messages. whether the verbs in commit messages should be in imperative or present tense is just too much.

I can tell you that I have been programming for a very long time. So if someone asks me "Why does it MATTER if lines are longer than 80 characters?" then I can answer "Because it means that the distribution of line-lengths will be more uniform, meaning that you will be able to fit more code on the screen, meaning that the amount of scrolling you'll have to do when trying to understand the code is greatly reduced." And scrolling interrupts your focus, which is bad. But if I ask someone, "Why does it MATTER if verbs are in present or imperative tense?" no one can answer.