A future projection is not a fact, so it's not a lie when it's wrong.
I wasn't claiming that that Musk (or anyone in particular) was lying in my my comment. I was just pointing out that you can, in fact, lie through making speculative statements.
"Tesla indicated that Elon is extrapolating on the rates of improvement when speaking about L5 capabilities. Tesla will not say if the rate of improvement would make it to L5 by end of calendar year."
Of course, there will always be people that don't, and that's perfectly fine too.