Not having thought about alternative solutions up until this point was a mistake on their part. Did they forget where they were uploading videos, or did they just not get the memo? Point being, it shouldn't have come as a surprise for either of them. Same thing goes for any other big youtube gun realated content creators.
Personally I had all my gun content black listed on my channel and demonetized many years ago now. Funny thing about that was the money I made with those videos was all used to build an AR-15 pistol, so fuck em!