probably. the breakthrough rate was through the roof, and pfizer/moderna cancelled their final phase testing to measure breakthrough rate (i don't have a source beyond a friend that was in the trial that got notified of its cancellation).
in short, nasal vaccination that actually trains the mucosal immune system has the potential to actually prevent infections, as the mucosal immune system is the first line of defense. the intramuscular shots have no chance to prevent infection.
but now we know why the breakthrough rate for injected vaccinated is so high https://www.nature.com/articles/s41385-022-00517-8
in short, nasal vaccination that actually trains the mucosal immune system has the potential to actually prevent infections, as the mucosal immune system is the first line of defense. the intramuscular shots have no chance to prevent infection.