Your collateral is valid though, just not valid to certain lenders. Why not post a thread? There are probably some people that may be willing to accommodate you if the parameters are right. I'm considering it myself.
If you think it'd valid then give him the loan 
I have seen some good number of people offer such collateral (NFTs) for loans in their own threads, and I haven't seen a single one of them acquire a loan. The fact is that NFTs are illiquid especially after their hype died down.
Yeah, that's why I was talking about the 'parameters' having to be right. So from my perspective I would want this NFT to be 'worth' more than 120% of the loan I would be giving out. Worst case scenario (a loan default, which I hope wouldn't happen) is that I would essentially be buying the NFT with the amount I sent our for the loan. Which is not ideal, but you have to access the risk. The borrower seems pretty trustworthy from what I could see and it wouldn't be the end of the world if I had to buy a BoredApe NFT for 5 ETH (for example).
If I get stuck with the NFT, it's just the cost of doing business. But I am thinking it could be a good idea. I'd want to be making a decent amount on the loan for that kind of risk be worth it.