You can not buy into all of a manufacturer's marketing puffery and still like a product on balance.

Puffery has specific meaning here and making objective statements doesn’t qualify.

You can’t call a 3’ log 5’ and say it’s just puffery.

You can call a 1.5" by 3.5" plank a 2x4

I don’t think Tesla can round up from 0 and say you can make money with a self driving Taxi service.

Tesla calls it FSD, not "Nominal FSD".

To nitpick your metaphor further: A 2x4 plank starts off as 2" by 4", and it is shaved down to 1.5 x 3.5 side to straighten it out. A Tesla "FSD" car has never been in its life fully self driving.