I'm not USian, so take this with a tablespoon of salt. My understanding is that he had some awful takes about AES countries in the past (seems to be better in some respects now, but I'm not sure to what extent). He seems like the least bad candidate by a wide margin (although that's not saying much), but I'd still be cautious about investing too much effort into electoralism -- of course, an anti-imperialist is not going to be allowed to win, so it all depends on whether the movement surrounding him can be used to prepare for revolution, e.g. if it's going to work with indigenous movements, the African People's Socialist Party, etc.
As shit as the US political system is it's always nice for an outside perspective. If you can find anything about his last AES opinions can you send them my way? I might have to do my own dirt digging.
Reason I decided to even post this question was that our current front runners for Dem and Rep are so awful that, and maybe I'm being rarely optimistic here, but maybe there could be a chance for a 3rd party candidate to make some waves, if not get elected but our system is clearly rigged for the 2 parties we have: Fascist and Fascist Lite(now with more 10% more rainbows).
I think he knows better now, but this is an astoundingly terrible take. If you're interested, he's doing recurring interviews on Revolutionary Blackout Network (they seem overly optimistic about him, so listen critically)