That would have been a wonderful thing not to mislead your customers about, or, if you're being charitable, being more clear about how to actually communicate opinion to these people.
I mean sure... but I'll be honest, I have serious doubts that the number of respondents who actually wanted half-caster warlocks but who actually voted 1s and 2s because they didn't like that specific iteration to be exceedingly small. I suspect a good number of them were probably doing 3s and 4s like they would any other thing that they had mixed feelings about. But you couple those 3s and 4s with the 1s and 2s from all the players who
actually didn't like half-caster warlocks... all of them combined brought the numbers down low enough to not make it worth bothering to salvage.
I know the people who loved things that didn't end up moving forward (half-caster warlocks, template wildshapes, spell "power sources") desperately want to believe that their views were actually part of the "popular side" but that the naughty, bad, tricksy, evil WotC had already made up their mind to kill them (which of course makes no sense, because if that was true they wouldn't have even offered them up to people to vote on in the first place)... but let's just face the
more likely truth:
They were just in the minority. Most people did not like the new options enough to warrant changing them-- oftentimes just for
the sake of change-- because the new thing was not any appreciatively better.
Did I have an issue or problem with spell power sources? Nope. If enough people loved the idea and it went forward, that would have been fine with me. I didn't really care. But I also can state plainly that when they first appeared in the UA my first thought was "What's the point of this? It's not any better than what we have, so why bother?" And I would venture a guess to say I was not alone in that thought, and the numbers seemed to bear it out.