I am aware of all of those. Metamask is impressive and it should evolve to hold NFTs if it wants to survive. It would be tough to translate anything between these multi-metaversii, technically speaking. I'm not sure anyone would consider it worth it.
You might be aware, but you are not a user. Otherwise you would know that Metamask views NFT's owned by the user on the blockchain. On MM mobile there is a tab that shows your NFT's On a laptop/workstation, zerion.io or zapper.fi works better to view NFT's than the MM extension.
Cryptos (coins and tokens), are on the blockchain. NFT's are on the blockchain. Wallet's don't hold cryptos assets (coins and tokens) Wallets hold private keys Desktop Chrome Metamask extension wallet holds the private keys and has the ability to transfer the NFT's by signing the transactions Here's a link to an Ethereum wallet address (not mine) that holds NFT's (erc-721 and erc-1155) https://etherscan.io/address/0x8e6ebf8bdca937389bf382d364e35ee55dd961f7#tokentxnsErc721 This is why you don't want Cuckerberg metaverse to dominate. Had the person owned the NFT to the handle @metaverse she could probably sell it for a million $ as she actually owns it, instead of being taken away from her
So when I see a public address, I snoop through some of these links: https://nftbank.ai/portfolio/0x8e6ebf8bdca937389bf382d364e35ee55dd961f7?network_id=ethereum_matic https://www.paperhands.gg/?address=0x8E6EBF8BDcA937389Bf382D364E35ee55dd961F7 https://context.app/0x8E6EBF8BDcA937389Bf382D364E35ee55dd961F7 hoping to come across someone like pranksy yet unknown; https://nftbank.ai/portfolio/Pranksy
Some of the major beneficiaries of Metaverse IMO will be (in the order of importance): Gaming industry Adult entertainment industry Personal development
I'm seeing some discussions on this NFT in Discord Alpha channels I'm in I might pick one up but it's not cheap