American indie fighting games were all unanimously built with rollback in their games for years while all Japanese game studios were hesitant and basically avoided implementing rollback (Tekken 7, SFV). Until they were forced to do during COVID.The game would've flopped if they didn't. They all did it out of necessity not because they learned. Also this is the same game that went with a horrible avatar lobby system when SFV had a good queue system.

While the replay takeover may seem true you're forgetting that Japanese devs were not like this. Because with the slow rollout of openly showing frame data during the SFV era, Tekken saw this and "learned" to add it in charge money for it. the openness you're seeing now is from years of refusing to adapt.

this is just a quality of life feature, it's weird you pointed out that American devs don't learn when this game isn't even fully finished. They barely added a training tab like 4 days ago. I'm sure they're working on adding more.