Depends on the friend group, honestly. I can see scenarios where people aren't ready to have guests half an hour earlier than expected.

Though, this is why communication is important; if you ask the host if 30 minutes early is preferable to 15 minutes late, you'll get the answer that works for them.

I am in my 50s. When I was a kid, tv shows had a hard start time, and people who turned up late just accepted that they missed out. And talking over the show was considered rude. Now with streaming, people will turn up late, take forever getting settled and regularly interrupt, because "we can always pause and rewind". With modern technology it now takes about two hours to watch a one hour show.