According to
68Logic, a PlayStation scene member who owns a hardware repair shop in France since 2010, using your PS5 vertically can damage it permanently, and he’s seen the result first hand with his clients’ consoles.
The problem, he says, is that the liquid metal used to cool the APU can sometimes spill, and become uneven, which impacts (at least) the cooling. Ben Montana, owner of specialized repair shop ILoveMyConsole in France, has
also been trying to
bring attention to this issue for months.
He says these are not isolated cases.