I think it’s bigger than a decrease in attendance in religious groups though I agree the impact is felt there too. Social clubs, non-profits, fraternal and civic organizations, neighborhood associations, labor unions, local political chapters, trade associations, etc etc.
Basically all forms of outward focused, community or geographic based groups seem to have been on a downward trend for decades in favor of hyperreal, inward-focused online spaces.
Basically all forms of outward focused, community or geographic based groups seem to have been on a downward trend for decades in favor of hyperreal, inward-focused online spaces.