Lol! The process of Bid to earn can be abused like anything. It will make use of people participating in a bid to artificially drive the price of an NFT higher. In order to earn, people will take part in the bid and push the price. It's an utter nonses and it is based on another nonsense called NFT.
Bid to earn was a clever idea in order to pump the price of the item for bidding. Bidders won't bid because they wanted the item but because of the possible earnings, they can get if they bid. I agree it is exploitable and can be abused.
Both of these trends will vanish sooner than expected. After a certain point of time, there will be no buyer for NFTs so a bidding platform based on NFT is going to die.
Just like any other nft projects out there because they really don't bring any innovation on the table.