You cant just tell people "Hey, thanks for getting vaccinated but you are unvaccinated now" and not expect any pushback.

100% agree. The booster will wake up a bunch of normies. "Get boosted or you're no longer vaccinated," is a losing agenda. People with working brains are starting to realize that this is the slippery-slope to forever shots. How often is the average vaxxer willing to get boosted? Once a year, once a quarter, once a month? Most normal people have a breaking point that will come well-before, "You need a shot every 3 months."