The whole point of my strategy would be that perhaps Delta is a precursor to a, let's say, Zeta variant that has almost complete evasion to the vaccine.

Let's say in January or something.

So what you're doing is giving your body a high chance to crush the Delta and gain some cross-immunity towards the future evasive variant.

Whereas if you just relied on the vaccine, it might not even work well in January.

Obviously this is just conjecture, but I think a real possibility.