NFT is a new thing that has not been accepted by many people, maybe Nft is hated by some people because they suffer losses from NFT scams, I think that's because NFT is still new and still in the process of being developed and so just wait for the future there will be many people chasing NFT after all the rules are clear.
Most of the hates that the OP is reading maybe owed to those users who got screwed by buying NFT items.
Because the concept itself is actually great, if it is used in appropriate way.
This is like a digital era of art, where if you are an artist, will be a faster way to connect to your patrons.
However, just like any other industry, this is also penetrated by scammers, and you can only prevent from being screwed by doing your own homework.