There's nothing weak about metaphorically walking into a club and realizing the people there aren't your kind of people and you don't want to hang out with them.
There's also nothing weak about boycotting said club because it was specifically created to cater to said people and you don't want to give them money/support their work.
But all of the Rumble user base can't be right wingers. So if you see same right wing stuff and you leave because of that. Yeah, that is weak. Find the good stuff on Rumble and watch that.
It was founded in 2013 by Chris Pavlovski, a Canadian technology entrepreneur. Rumble's cloud services business hosts Truth Social, and the video platform is popular among American right and far-right users. Rumble has been described as "alt-tech".
It's not a matter of finding good content or content that isn't "alt-right." The platform itself is inherently an objectionable alt-right soapbox and I have 0 and I mean Z.E.R.O. interest in supporting that.