Absolutely not! I'm part of an online community of people who play Diablo II single player offline, and we still get new players and it's a really tight knit community. We have community events and put a lot of effort into sharing our characters, a couple of people add a lot of storytelling
We also arguably have the most knowledgeable players around, so there's a lot of support for new players.
The forum;
https://www.diabloii.net/forums/foru...layer-forum.3/
An example (my own) of a collection thread - a little like the 1000 books
https://www.diabloii.net/forums/thre...ourney.943396/