>>47588655That depends heavily on game design, and I think you're heavily underrating stuff like how horribly incomprehensible League and Dota are to spectators who don't know every single ability being used in the particle mess. Meanwhile, something like the utter nonsense grab bag of games in WIK, or the old classic Homo Genius videos are plenty of proof that fighting games can be entertaining even if you have no idea what's happening.
The weakness of fighting games as stream meta is that watching someone learn them from true scratch is meh/10, which is why the overwhelming majority of high viewership content is tournaments. SF6 story mode might do well enough to be decently engaging on that front, and Modern controls strike a decent balance between input simplicity (literally Smash controls) and player agency, that let you at least mess with a version of every move without needing to memorize a movelist every time - not relevant for locals-goers like us, but extremely relevant and useful for first-timer streamers.