It's not your job to enforce your views on people. Let the government handle it, no one elected you. At least in the US, the government has proven the best institution to protect the public while also giving due consideration to people's rights.
In this day and age, given the quality of medical treatment available to most of the population, any outbreak of diseases can be handled in a much better way, and with less comparative casualties than ever before, regardless of the use o vaccines.
Vaccines are useful, there is no doubt about that, but they are in no way a necessity without which we cannot live.
Just because something wasn’t needed before doesn’t mean it isn’t needed now that circumstances have changed. We also existed for hundreds of thousands of years without seatbelts.
If being nice turns out to be the best strategy for curbing this movement, then I am all for it. If screaming in their faces about it turns out to be more effective, then we have to do that.
I would love for everyone to be able to "rejoin society" but at a certain point we also have to defend society against those who reject it in harmful ways. Not every illogical cult-like community is as harmless as flat-Earthers.