I think not, unless there are only very specific meetup threads that you don't want to see. E.g. ones with no location in the title.
Any individual meetup thread is very valuable for a small number of people, and indifferent-to-mildly-costly to a large number of people. Votes allow you to express a preference direction but not magnitude, which doesn't actually capture preferences in this case.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.