No. The variants are variants, not strains. It's based on gene deletes primarily. More Sneaky just means a bit less effective. Studies suggest about half as effective. So from 90% to 80% etc still highly effective.
Most people in 1st world countries (where $20 is not that much) would, but I like that it might not be needed. It's less hassle, and it also breaks all the assumptions were made by the anti vaccine misinformation.
Anti-vax, anti-mask crowd have been so wrong so many times over the last year. I doubt another huge L would change their minds. It's twilight zone level stuff.