Wow, are you me? I just finished my first EGS game a month or two ago, and that's after years of collecting games. I played on Steam Deck with Heroic, so I haven't even used their client (I claim on their website).
Yup. I've completed hundreds of Steam games, I've played one EGS game. My library size isn't that different between the two (like 600-700 on Steam, 200-400 on EGS), but I spend a lot on Steam and nothing on EGS...
I played a bunch of older games i got cheap on steam deck and i'll do the same when the deckard will come out. 10/10 games that are 10+ years old are great to play on the go!