House of Dragons has an anti-fan base.

The most popular subreddit for game of thrones content is based around hating the source material: https://old.reddit.com/r/freefolk/

Hm. The fanbase from GoT was rabid, I'll give you, but rabid with negativity - they hated the ending, and a lot of them soured on the entire show after it was over. LoTR has an equally rapid fanbase, I'd say, but they were much more uniformly positive towards the source material.

Then again, maybe that's why - the GoT fans are pleasantly surprised that HotD isn't a disaster, whereas the LoTR fans are upset that it's not as good as they'd expect.

Your opinion is an extremely rare one, if you weren't already aware. The consensus is the opposite.