I encourage you to keep doing this, to the extent you can keep up with it. Not specifically to push back, but just to add what you feel is the most appropriate ID for the evidence, and an informative comment explaining why. Then just ignore the complaints (unless you see an opportunity for further clarification). The more that you (and others) can lead by example like this, the best hope there is for eventually educating folks like that about expectations on iNaturalist. If you think it would help, you could also point them to resources like this or this.
If you ever feel like a user is showing a pattern of intentionally wrong, malicious, or joke IDs, though, definitely contact help@inaturalist.org so staff can look into it and see if account suspension is warranted.