That is why it is very important that blockchain or NFT marketplace will be connected with Ethereum blockchain that it will be possible to interact with Ethereum blockchain.
Now NFT very popular. A lot of people buy NFT collections. But it must be simple to create, promote, buy and sell NFT. That is why a good NFT marketplace will be in demand.
All in all you are correct, but due to the simplicity, more scams may appear.
Scams do not create a real product. That is why it is necessary to check what have already been done to understand the team's achievements.