Yeah I mean, pit-shaving is a personal choice. Whether you shave or not, there’s no need to judge. We shouldn’t even have to justify it and I find it really disappointing when it comes to that. Like, really? I have to justify why I decide not to shave my own pits to you? Because this influences you how..?
As for the infection thing, that creeps me out. I’ve dealt with some killer ingrown hairs (another pro-tip: no shaving means no ingrown hairs EVAR AGAIN) but this lymphatic pus business sounds overwhelmingly unpleasant.