Yes. They have their own servers, their own software, everything. Peter Thiel backed them early on and they were designed from the start to not be dependent on Big Tech for anything.
They merged with Dave Rubin’s Locals a while back which was started with the same ethos in mind. Rumble/Locals also helped GiveSendGo when Leftists were trying to attack it during the Canadian Trucker protest. They’re one of the good guys.
BTTT