I disagree.

I've been though the Steam Sales for well over 10 years now, and I remember when they switched up how they did it.

Yeah you no longer have a 90% discount for a single day on a game so there isn't anywhere near as much chatter, which I miss, but there are plently of big names with 90% off. I think that is either what you miss, or you are now 5 years older and just don't get as excited, or there hasn't been much released that interest you.

https://www.pcgamer.com/games/only-15-percent-of-all-steam-users-time-was-spent-playing-games-released-in-2024/

Games with good reviews and 90% off:

https://steamdb.info/sales/?min_discount=90&min_rating=80&min_reviews=500

Is it the sales, or are there just less games coming out at the moment that interest you at any price?