As of now, there has been no change in policy.
Despite many discussions on meta, consensus has never swung dramatically against the policy not to flood the front page with edits. What exactly constitutes a "flood" of edits isn't always agreed upon by everyone, but there's a long-standing community policy (albeit not formally codified on meta) that at most 5 of the top 15 posts on the front page should be last edited by the same person (similar to this meta where a mod proposed 4 of the top 10).
It's true that a few people recently are enjoying editing a lot of old posts, but they seem to be aware of the "5-in-15 rule" and generally not to be breaking it. Sometimes we (either mods, or other community members) observe someone going over the limit and ping them with a gentle reminder in chat or comments. If you see someone editing too much, you can ping them to let them know about the policy. (Anyone who's edited a post is @-pingable in comments on that post, so it's easy enough to ping a mass editor even if they don't use chat.)