I know that's what you believe, it's not what I believe. I believe it is ridiculous and immoral to coerce and force people into medical treatment for a relatively minor illness that others have freely available access to effective vaccines against. To be sure it is worse than the flu, but this is not smallpox, the bullies and fearmongers making comparisons like that were simply lying and spreading misinformation. And if it was similar to smallpox, I think it would be quite clear and people would be far more inclined to get vaccinated.
And I disagree with your idea of blame, as I said above the same argument can be made about overweight people and others. Maybe you are responsible for the death of starving children right now because you were browsing the internet instead of donating your time or money?
And it absolutely is authoritarianism because it is not about the virus or even the vaccine itself really. It is a totally politicized tool that authorities are using. That should have been clear when people were flip flopping between being skeptical of the "Trump" vaccine and calling border closures racist and refusing to acknowledge natural immunity and all that other nonsense. It's not the slippery slope because this is already authoritarianism. Telling people they can not go about their lives, they can't work or go to school, tracking and controlling where they go, who they meet, what business they do. It's already here.
If mandates were such a non-issue, why was it just a few months ago the experts and politicians were all lying and denying there would be mandates? Are they just pathological liars who will lie about trivial things that don't matter? Or did they know the seriousness of the issue and decide to lie and mislead until the opinion polls looked better for them? Neither option inspires a lot of trust in them.