The amount of work put into Demon's souls remake is way more than those free patches. You really comparing apples to oranges ?
Demon's Souls Remake and Miles were the PS5's first real big games as the same experience can't be played on the PS4 and we got them on launch day. Then the PS5 also got other exclusives like Sackboy and Astro's Playroom from launch day, Destruction All Stars in Feb, Returnal in April, FF7 Remake Intergrade/Yuffie DLC, Guilty Gear Strive and Ratchet and Clank in June.
While XS is still waiting for their first big exclusive in July in Flight Sim that's a PC port from an almost 1 year old game.
If Miles doesn't count since it's cross gen, I guess come Holiday 2021, Halo Infinite and Forza Horizon 5 won't count in your book either because they're on X1, right ?