This isn't about individual max donations dude, this is about having almost direct access to someone who could become the president of the US. I'm sorry your candidate had to pivot to Biden's lane after he couldn't find support in a younger and more diverse crowd, but so many of us see our country and our world as being honestly ruled by a class and not by a few candidates that won elections. Freaking listen to this interview about someone, who isn't Amy McGrath, that makes this point exactly from the perspective of the Kentucky working class.
https://soundcloud.com/user-972848621-463073718/bonus-episode-a-conversation-with-state-representative-charles-booker
The Our Revolution wasn't a huge success, I frequently heard people refer candidates who were part of Our Revolution often lose races, particular in the Sun Belt. It was meant to try and be a more grassroots alternative to the DCCC, not to enrich Bernie. Like the response said, Bernie has no problems fundraising.