I understand. People will differ in reaction to imprecise risk metrics.
There’s a spectrum of reactions. Some will read “less effective” and interpret that as “no longer effective AT ALL – not even a little bit”. Some will assume “less effective” means “a smidge less effective, no biggie”.
To me, “less effective” are weasel words meant to make for eye-catching copy. Let me see the actual numbers, and from lots and lots of studies (one or two or three aren’t enough). When consensus is achieved among researchers that “Yep, we need to pitch all the mRNA vaccines – they don’t work anymore” … I’ll then perk up my ears.