I used to have the Rumble app installed [1], and I uninstalled it when I saw it was using gigs and gigs of data on my phone, even when I wasn't using the app. I'm sure I opted into some permission at some point, but I really didn't like the idea of them constantly sending data to their site at the expense of my data plan and battery, so I removed it.

Now I think this stuff is the norm though; I guess bandwidth is so abundant and cheap for the average American that they don't realize how much is actually being used?

[1] I'm not conservative but there was a creator I liked that was banned from YouTube and was uploading to Rumble.