Yes. Of course it's not a lie if you never correct something that becomes a falsehood. Everyone knows that.
Like how I intend to give everyone in this thread one million dollars.
For your metaphor to work... you would have had to say something like "I have millions and millions of dollars. I'm going to give you some..." and then you give someone $20 even though they thought they were getting a million. You have not lied to them... they got what you said you were giving them-- some money... the listener just expected something different because of desperate hope and a matter of degrees.
We have seen plenty of people here on these boards talk about their 5E games, and the feeling they got from them being like the feelings they got playing other editions. To them, the stuff they could put into their 5E game to feel like whatever edition they enjoyed previously was good for them. So did WotC state a falsehood? Not for those people.
But sure... there are also a heck of a lot of people who expected all these new rules being written in all these new books to be so airtight such that the two games would be almost the same-- nevermind the fact none of us could conceive of any way that could be remotely possible. But since 5E was not a direct continuation of their other preferred system and there was going to be no way to
make 5E into their preferred system... in their mind they were lied to. Which... fine. If they think they were lied to, then so be it. But if I had to guess... I'd say the amount of things said by a lot of players with (at least in my opinion) really outrageous expectations of how much 5E would mimic 4E for example (or any of the previous games)... WotC just threw up their hands and shrugged their shoulders because of those outrageous expectations.
Now
could they have just come out and said "Okay... the game has changed from what our original hopes were in terms of modularity, and now the game is this..."? Sure. And that would have placated some people. But I don't for a second believe it would have made
everyone happy. I think plenty of people would still be pissed off and constantly complaining about this if for no other reason that they didn't get what THEY wanted. So instead WotC just let their actions with 5E speak louder than their words.
Because at the end of the day, I don't believe a lot of people want honesty... they just want to be RIGHT. At least, that's how I feel about it.