I wouldn't have any concerns at all about the PS5 becoming obsolete any time remotely soon. The PS4 is still getting numerous recent AAA games like Hogwarts Legacy and God of War Ragnarök, plus upcoming games like Resident Evil 4 Remake and Assassin's Creed Mirage. With the PS4 (released in 2013) still getting that level of support in 2023, the PS5 will be alright until at least 2030 probably a little more.