Joint owner on account also named POD?

Jointly owned account with father and son. Father wants all siblings including the joint owner son to be listed as beneficiaries. My thought is it seems pointless to list the son as the beneficiary. The money won't go to the PODs until the last owner dies, so in any event, the son would be deceased prior to the funds being disbursed to the PODS.
Does anyone see an issue with the joint owner being listed also as a beneficiary?

Outside of being silly, I don't see any issues

Besides cannot imagine how a platform could even handle this titling, one cannot be their own beneficiary.

While the customer "wants it" that doesn't make it logical. I'm sure you can explain to the customer or new account staff how silly that structure is.

Thanks all, I appreciate your opinions on this. The more I think about it, the sillier it become
I think we will educate our accountholder and not let them be their own beneficiary.