I don't know what nft buyers really look out for when they buy their nft but I want to believe investors won't just buy any random nft just because it was listed on opensea. At least those nft should have a project with an actual team behind it. If not, what value will a bot generates nft have!
So using bot to generate worthless nft with the hope that people will buy is pointless and if people actually buy them, well that's a terrible mistake on the part of the buyer.