Like I can imagine him enthusiastically siding with protesters could have either turned all centrist off, or perhaps galvanized the population into rabid support. There'd be actual optimism in the air. There'd be a groundswell and a gameplan.
Or chuds might have felt extra threatened and started accelerationist, captial murder sprees.
Covid? RBG? Post office? West coast fires?
yep, Corbyn was the canary for us in that way. No doubt in my mind you'd have Nancy Pelosi on TV saying things like "Of course I support the nominee... but we must be wary of embracing a different kind of Dangerous Radicalism" and that sort of passive aggressive stuff.