It's so obvious to me how counter-productive these measures are. However I don't suppose increasing vaccination rates are part of the goal of these measures, but just protecting YouTube from having to do moderation or take responsibility for the content on their platform.
My mom for example, after many conversations and a great deal of effort on my part to present data and evidence that was free from shaming and judgement, has made two appointments to get vaccinated, and subsequently cancelled them. The second cancellation came after Biden's recent speech blaming unvaccinated people being directly responsible for killing the vaccinated, a nonsensical supposition.
This is scary stuff. The moral absolutism that the platforms endorse is creeping into more and more subjective areas, and essentially obliterating any hope of nuance or increased understanding about changing strategies and data.