On top of meetups evaporating, the big issue is post-COVID meetups meeting 3 nights/week nearly impossible. I have 3 or 4 meetups I try to regularly go to and I'm lucky if they are run monthly.

I was recently watching a video mentioning a study that it takes ~200 hours of constant contact on average to make a "close friend" and some 40-60 hours to get go from acquaintance to "casual friend", then 80-100 to be a what you'd simply call "friend".

Meeting up for 2-4 hours a month would take years upon years to make anything out if you don't supplement it yourself.