Let’s assume for a moment that what you say is accurate

Let’s not. Instead of assuming, we can agree that the referendum being advisory is a matter of fact. I can provide thousands of sources for this if you are unsure.

between the referendum and actual Brexit there were TWO general elections.

Two points here. Firstly, an election is not a single issue referendum and the Conservatives winning an election is therefore not equivalent to the voters agreeing on Brexit.
Secondly, in both of these elections the majority of voters voted for anti-Brexit parties. So, if we were to take the elections as referenda, (which, again, we can’t) the results would show that the UK voted subsequently against Brexit. Twice.

As for your last paragraph, the fact that “they lied” (not sure why this is in quote marks: they did) does matter. It’s not reasonable to expect that the whole populace will have the time, inclination, ability or education to be able to understand the full picture and determine which parts of what they’re being told are true and which are lies. This is partly why we elect and pay representatives. A lot of lies were told, some in completely novel ways and some in more traditional ways, but enough to at least confuse the average Joe. Why would you lay the blame at the door of people who made a decision based on the best information that was available to them when that information was bogus?

those lies at the time were constantly debunked in basically all of the media if you just bothered to look.

Outright incorrect here. The majority of the media was pro - brexit in the UK. Owned as it is by disaster capitalists and paid-up Tory supporters. At the very least, the message from the media as a whole was incoherent. I believe it’s fair to say that large parts of the mass media embarked on a targeted misinformation campaign for the very purpose of muddying the waters and convincing people to vote against their own interests.

I’m not sure why you overlook all of this. Perhaps you just didn’t know. Perhaps you’re a Tory supporter. Perhaps you just like nice, neat black-and-white answers. But by doing so, you’re blaming a lot of innocent people and letting a lot of guilty ones off without scrutiny. You’re literally making it worse.