This game were changed so little that it should be called Demon's Souls Remaster. Not remake.
Also PS5 has no real exclusive yet. Spiderman Miles Morales is 8 hours long and availiable also for PS4.
Demons Souls Remake is so close to PS3 game that its impossible to all it exclusive since uts just UHD version of DeS.
So if you didnt grabbed PS5 and feel butthurt for not having it it shouldnt be big butthurt. Especially that all these 70$/80E* titles (which also have special more expensive versions (+microtransactions which make them even more expensive) will become cheaper as peoples will start to sell them to pawn shops or regular shops will realize that many titles have more copies than consoles availiable.
*(according to Sony Europe is more rich than USA. I guess Poland, Romania, Ukraine, Moldowa, Kosovo, Bosnia, Herzegovina, Albania, Serbia, Belarus, Montenegro and other filthy rich countries should send more humanitary missions to starving children of USA who cant afford 2 meals per day).