Generally the terrible JavaScript is stuff you don't have to argue until you're blue in the face to avoid. A lot of people have bad JS code base, but they know

Generally the terrible JavaScript is stuff you don't have to argue until you're blue in the face to avoid. A lot of people have bad JS code base, but they know they are bad and are trying to do better. That's fine by me. For this particular stuff, if a team is really into the whole OOP/classes things, it's not like a small feature like arrow functions vs not, or semi-colon vs not... it will dictate the entire architecture of the entire code base, and it's easy to detect, so why not?