Your question layout is loaded. 99% or more of them are going to vanish so you can't really put them as a bubble or non-bubble categories. It's like asking are cryptos in a bubble when there are new 300 rug pulls per day. Yes, most of them are scams and it's quite impossible for someone uninitiated to tell them apart. So no i wouldn't buy anything just because it's "metaverse" or "NFT". Just like i wouldn't buy a cryptocurrency just because it's some random token.