Most people don't care about the platform that's used if there's enough buy-in.

I was part of something similar a few years ago at a local makerspace. We were using Meetup.com for a while then someone relatively new suggested we try using Discord instead. There wasn't much of a convincing reason besides "let's try it", so a bit over half of the active people gave it a shot, and everyone else followed since that's where the activity was.

While a few people were initially grumbly over making a new account, there aren't many complaints now that we have bots to help with calendars and a bot to help us monitor equipment.