I try rumble again every few months... I mostly use YouTube on my android tv box (NVidia Shield TV), and the experience is generally better than Rumble. As much as I'd prefer not to be tied to Google, given how much content they suppress, it kind of sucks overall.
It's hard to get a sense of new/good content from those that I follow without having to check each channel manually. Which may be fine for some, but on YouTube as a contrasting for instance I'm following like 150+ channels on various topics of interest. Rumble is about 30 and already difficult to manage.