"Buyers of NFTs may be blind to the fact that there's no limit on the supply". Sure anyone can make an NFT, but not all of them will be viewed as realistic stores of value. Like baseball cards, you will not print an unlimited copy of rare cards cause they would lose their value, and no creator would sabotage their brand like that. Besides, it costs money to mint a token, so there is a limit related to the artist's economic situation.