I think the alternative was somewhat obvious: Meetup's original focus was always on Discovery. "If you like this community, you might like these others." If a group dies, because yes of course they will that is natural, recommend new ones, bring the members of the dead community back into the Discovery loops. That's opt-in and should, in theory, have put Meetup's best foot forward that their main tools/products worked as designed.
There certainly is some value in "this community has been going strong for X years" metrics in that Discovery loop for entirely new people looking for a "sure thing", but that's a trap for so many reasons: it led to Meetup doing what they did to destroy communities I followed; it led to stagnation in people afraid to create new communities simply because Meetup's Discovery engine was down ranking new stuff; arguably part of their multiple pricing change fiascos was that they weren't growing new communities as fast as old ones. There should have been other tools at Meetup's disposal to enhance their Discovery engine for new communities and for new forms of old communities rather than rely so heavily on old communities it "couldn't" let die.
There certainly is some value in "this community has been going strong for X years" metrics in that Discovery loop for entirely new people looking for a "sure thing", but that's a trap for so many reasons: it led to Meetup doing what they did to destroy communities I followed; it led to stagnation in people afraid to create new communities simply because Meetup's Discovery engine was down ranking new stuff; arguably part of their multiple pricing change fiascos was that they weren't growing new communities as fast as old ones. There should have been other tools at Meetup's disposal to enhance their Discovery engine for new communities and for new forms of old communities rather than rely so heavily on old communities it "couldn't" let die.