We weren’t sure we’d get sterilizing immunity, then we did, now it looks like we’re losing it. The important response is not “this is what we always said”, it’s “crap, what can we do NOW to get this awesome protection back?”
To be clear, yes of course the MOST important role of the vaccine is to prevent serious disease (and yay, we still have that). But preventing serious disease in those who can’t or won’t get vaccinated was a pretty damn valuable property too.