Many metaverses actively use NFT and continue to develop and interact with each other. For example, a next-gen gaming NFT utility initiative named Shuna Inuverse (SHUNAV2) bypasses that process by making partnerships with the already existing and future appearing tokens to share their metaverses. More information about how it is possible to interact between different metaverses can be found here -
https://www.livebitcoinnews.com/lbank-exchange-will-list-shuna-inuverse-shunav2-on-january-5-2022/Now cryptocurrency market falls but people continue to buy NFT.
Many famous persons and big companies create their own NFT collections and actively promote them.
That is why NFT and NFT collections are so popular.
Because famous persons and big companies promoted their NFT collections, people speak about such collections.
They are very popular and in demand. That is why people continue to buy NFT.