The thing that may be causing this slight decline in terms of interests about NFTs is the current market conditions which is bad and got worse many days after you created this thread. Another factor maybe unawareness of other NFT markets other than opensea which offers a wide variety of good NFTs as well and has much cheaper prices and fees due to the low fees that are required for every transaction. Still though, my twitter notifs still continue to explode due to NFT related tweets and retweets. I guess the drop on interest isn't really that drastic.
I would guess that mocking is a part of it as well. People who invest into NFT do not get the point of it, and see it as just an investment and that’s a whole another world, and a big majority of the crypto world as well.
I would definitely consider buying an NFT if there is an important artist that painted something, either by hand or digitally and if I want to own a piece of art by that artist then I would be willing to buy it not because I love NFT or anything, but because I would like to own an art by that famous artist. However, if you create 10k different versions of the same ape, then I am sorry but that has no artistic value and that caused it to go down, because NFT's from famous people and artists are still up and valuable but all those shitty ape things will of course go down and lose hype.