Ryu's defensive mobility is pretty bad tho lol. That's not false, it's objectively true. His aerial influence is terrible, if you hit him, the most he can do is Focus Attack but he's locked into it for almost 30 frames, etc. etc. I am recalling everything people say about Roy and how his air speed is bad because of his terrible accel, this applies to Ryu except tenfold (the large difference is Ryu's aerials are better on paper but his mixup game in that regard is lacking. That's why they're all kinda safe on block, he can't really weave or mix up his landing.)
Spotdodge is bad, rolls aren't that good. He's the most viable heavy in the game because of his punish game, but his defensive options outside of like, shield are pretty bad. His ground speed is his best mobility trait but that's only if he runs, which he has MINIMAL solid options out of (DA is ok, dashgrab is good, that's it). You'd normally then walk but his walk speed basically relegates it to doing it in people's faces only.
I don't play Ryu anymore mostly for control reasons (Why does A button do specials) but nothing that's being said about him in there is untrue at all.
The funniest thing about Ryu is that what he's been known for very often (his very potent fireball game) is really REALLY bad in Smash. Why does Red Fireball literally die i none hit to EVERYTHING? The FAF is terrible (worse than Mario fireball except Mario's are way better because of how he can weave and their trajectory in the air vs. flying straight ahead like Ryu's), the dmg isn't good. They lose to everything but blocking which is funny.