Let's not forget that the vaccines only have the high 90....95% effectiveness in reducing severe & critical covid-19, not mild/moderate nor asymtomatic.
So vaccinated folks can still become infected but likely only have mild symptoms maybe like a cold, but my point is that they will still be spreading the virus, especially with masks coming off, restaurants and retail opening up, social distancing disappearing. IMO, the high majority of folks think that once vaccinated they 95% won't get the virus and thus, won't be spreading it.

I read an article this morning written by an MD researcher anticipating that the vaccines may permanently decrease our natural ability to produce antibodies.