No and no. I watched the video, and there was no indication that the shortage was due to Remington being down. He did note the need to hire hundreds of workers and refill supply pipelines, and says they have done that. He never blamed consumers in any of the videos, but referred to supply problems from bankruptcy, politics, covid and fear due to civil unrest.
He also emphasizes that quality will not be sacrificed, but I regard that as ad speech because I have seen quality decline in Federal and Remington ammunition in times of high demand. If he can deliver, there is a lot of money to be made, but they all know they must make hay while the sun shines because interesting times lie ahead.