No. The vaccines are not 100% effective at preventing spread (nor for preventing serious illness, for that matter). That is not even remotely the same as "not

No. The vaccines are not 100% effective at preventing spread (nor for preventing serious illness, for that matter). That is not even remotely the same as "not effective". In practice, the vaccines (with the possible partial exception of the J&J single dose) provide significant reduction in both spread and serious illness.