Yeah, it’s unsustainable for one person to keep up with all the observations of any taxon, it takes some effort but it helps a lot if they try to share their knowledge if they don’t want that.
When I started identifying hover flies in 2017, it was possible for me to keep up with all the observation of one genus in North America, but now I’m a lot busier and there are wayyy more observations being posted than there were then. I and others realized at the time that we needed to spread the knowledge so that other people could get involved in identifying, and there’s some documentation of that process here: Identifier Profile: Fly Identifiers
A couple related topics here: Identifier Mentoring / Research Collaboration: Method for supporting non-experts to label in ‘unpopular’ taxa