It’s just a personal preference thing, there can be a lot of effects from things being too shallow that I don’t love. If only part of the subject is in focus instead of the entire subject, it can be really distracting. If the entire background is blurred into oblivion, it can look like the subject is disconnected from their environment, like they’re in front of a green screen or something.
Honestly, you’ll probably be fine! But yeah, people go crazy with the shallow depth of field sometimes and it’s just not my aesthetic.
EDIT: Pretty much all of the photos I post here [1, 2] are shot on a Panasonic GH5 at around f/4.0. (If you’re in the market for a photo camera, I don’t actually recommend a GH5, it’s just what I happen to have handy most of the time.)
EDIT 2: For a more relevant example of the amount of background blur I like (you’re probably taking pictures of people and not audio gear), here’s a photo I took a couple months ago; the EXIF data shows ISO 400, 1/200s, f/2.8, 25mm (which is roughly equivalent to f/5.6 and 50mm on a full-frame sensor):
