If a community Overpass instance’s “available quota fluctuates frequently” it’s doing that for a reason! I’d suggest “use something that is known to work” is actually the better option.
Saying that “someone should” always generates a 
in OSM! Having some low entry barrier (such as being able to use Josm) before reverting someone else’s work is IMHO a good thing, and with a DWG hat on I’ve seen numerous edit wars played out via the medium of osm-revert . Also, it regularly makes a mess that needs tidying up.