not everyone reads the review thread. I specifically remember some years past someone got really mad that people were skipping their review. (Someone had written a detailed review and everyone ignored it or something) and it was hard to reply to specific parts or someone's review since the reviews are so long. sometimes there are just specific things to reply to but some people dont want to bother to quote the whole thing, the review thread is not read by everybody either.
The house threads are meant for general discussions of the house with light spoilers. The review thread is for reviews, with more spoilers. That's how it's been for 10 years of the forum's existence.