You're missing some important words in there.
"More and more studies are showing that fully vaccinated people with a breakthrough cases are not
[as] likely to spread it
[as unvaccinated people]"
Otherwise, it sounds like an absolute that vaccinated people never do something. We'll get 20 pages on people fighting about that and saying it's not 100% and totally happens. Followed by 10 pages of people saying since it happens at all, there's no sense getting vaccinated at all.
None of these are absolutes. Even the Gupta article in the first post doesn't say it's an absolute, but it does say that it's 8 times less for a vaccinated person and for less time. Both of which make a vaccinated person much less likely to pass on the virus than an unvaccinated one, but not 0.
Right. Everyone wants a light switch that's on or off. They want every solution to be like having a baby. Either you're pregnant or you're not, there's no such thing as half way.
But, that's not how virus transmission works. Maybe you're infecting lots of people, maybe few, probably not everyone you see and probably not none. And, since it's "less", when spread is high, that "less" is a larger absolute number. It's less of something large instead of less of something small.
We'll probably still get 5 more pages on how the vaccine is practically a forcefield or not anyway.
Everyone get vaccinated. Everyone get everyone you know vaccinated. That should drive the spread to less. Then less of a small number will be even less and it'll repeat until less is so small we don't worry about it anymore. Then I can get my Dole Whip, finally.