The emotive language could convince people, but I'm not sure it'll do much after all the emotional pleas there have been so far.
On one hand, I think he has every right to his anger and that some of it is because of people's risky behaviour -- though I point my own more at there being too few beds and how many hospitals have been torn down or otherwise not in service in the last few decades for this preference of large centralized hospitals. Living down the road from one that was torn down 4-5 years ago, I can't help but think it would be really nice to have those facilities rather than a construction site for more tiny box houses that aren't going to sell (it's literally next to another housing development that is such a bad fit for the area that they're still trying to sell places even though it was finished before that hospital was pulled down).
On the other, I think the "accept it's going to be "miserable" occasion this year" doesn't help anything. Calling something miserable doesn't tend to be a great way to encourage people to do it. I get its his anger talking, but that's not well thought out. Plenty of people do it quite cheerfully and have for many years. I love my at-home New Years plans and I find it weird we're still getting this idea that unless we're gathering in groups, we should be miserable touted. That things are going to be rough going forward and it'll likely be miserable in many places of work open tonight, yeah, but the 'occasion' doesn't need to be miserable for most at home.
The closest I've been to breaking the rules has been a handful of times of being in shops with another adult of my household. I know some think that makes me a shitty selfish person, if people want to add blood on my hands, fine, it's not the worst I've been called.