That's a nice feature. You can't see you playtime on Ghost of Tsushima and I was very curious to know how much I've played so far, this will give me the answer.
Yeah, on Steam profiles you can see Recently Played (up to three games and the option to view more - anything you played in the last 30 days) and then if you click Games to view the full library you can sort by most played or alphabetically. You can also customize your profile with showcases like Rarest Achievements or Favorite Game (showing hours played and achievement progress).
It's definitely cool to see Sony finally add playtime for games in one place and not just for new games but old games as well. Microsoft should do the same with Series X/S, if they haven't done so already.