I was checking out videos on this and people are suggesting that 3500 is better if you are looking only for gaming as games don't require a lot of threads and 1600/2600 is better if you are looking for streaming or rendering videos..
Those are some very generalized videos... there are some crucial details missing that can make or break your experience.
Between the Ryzen 3500 and 2600(choosing this for simplicity's sake):
-Yes, Ryzen 3500 has greater per core performance than the 2600. Obviously, the 2600 has greater multi-thread perf. This will impact your experience in certain titles.
-In most single player games, the 3500 would yield greater fps. Call of Duty Campaign Mode, anyone?
-In older games from 10 years ago that ran off 2 or 4 threads, 3500 would also win.
-In multiplayer titles, like your MMOs, battle royales, and shooters, the 3500 quickly becomes thread limited, and there's no way to fix that short of purchasing a new cpu with a higher thread count: 2600 wins here.
-As more games become optimized for higher thread count cpus, the 3500's fps minimums, or 1% lows, will not be as good as on a 2600, even if the latter cpu doesn't have as high single thread performance.
-Some people want to do more than just game: additional background tasks require more ram as well as cpu resources. You won't really have any extra leeway with that on a 3500 and playing COD, Fortnite, or other multiplayer game.
So, no, a 2600 isn't just for streaming/editing. It's a cheaper long term solution. Whomever made those videos you watched recommending cpus like the 3500 weren't thinking long term.
If you go with a 3500, who knows if you'll get even a few years out of it before changing cpus AGAIN.
6c/6t cpus are like 3 years old now, but Hyperthreaded quad cores(4c/8t) have long since been available - the latter was usually better still in the long run.
I will say this though: if all you care about are single player titles and older, sometimes emulated games, then yeah, I could see a Ryzen 3500 being viable.
The moment you add multiplayer games - NOPE. The game will be playable, sure, but the visuals won't be as smooth. Though, perhaps you won't mind that too much...