The cybertruck is on a different scale of unpopularity.

Nobody threw Molotov cocktails at Delorians. (Edit: or even DeLoreans)

Holy moly those specs are remarkably similar to my 1st generation Prius.

I'm not saying you are wrong in anything you state, and you make good points.
And yes you are probably right that the shortcomings compared to what was promised is the main reason sales didn't go as expected.
But I think you don't see it the same way as barneypiccolo you responded to.
Wasn't the DeLorean design pretty iconic from the beginning? The fact that there are still more than 2/3rds of the cars built on the road today 44 years later does speak volumes to its favor regarding popularity IMO. Those were not cars that were bought, found insufficient and then scrapped. But instead have been maintained despite DeLorean hasn't been around to supply spare parts.
Also the fact that the car had such a central role in the Movie Back to the Future, because it was simply such a cool car despite it's flaws, what other car could they have used for similar effect?
Imagine trying to do that with the Cybertruck! The Cinema would most like burst out in laughter from claiming doing anything with a Cybertruck would be to do it in "Style" as Emmet Brown expressed it regarding the DeLrean. It would clearly be seen as a fat joke on how stupid the car is and looks.
So no the car wasn't popular enough in sales for the number of cars DeLorean built, but it was never an unpopular atrocity like the Cybertruck is.

Edit PS:

they had produced 7,000 units and sold 3,000

That's not true:
https://en.wikipedia.org/wiki/DMC_DeLorean

total production reached an estimated 9,000 units

And allegedly they needed to sell about 2000 cars remaining to continue.

How dare you disparage the amazing Fiero!

getting spanked by a 1980 Chevy Citation (0-60 10.3) is not a good look

[Citation needed]

FUCK I accidentally hit 88mph again. I'm going to be really early to dinner...

Yeah, he was a larger than life character, and the end of the company was spectacular. Most companies end with a whimper, his ended with an explosion.

I have a little personal anecdote about the end of DeLorean Motor Cars. At the end, I was living in Cleveland, OH, where DeLorean's brother had a Cadillac dealership, which also sold DeLoreans, of course.

When the company crashed, the government, or the bank, or the court, or somebody, was coming to take all the cars that were sitting in the factory parking lot in Detroit. The local news caught a helicopter shot of a long line of DeLoreans driving out of the lot, and down the road in a long line. They didn't bother to follow them.

A few days later, it was reported that all the surplus DeLoreans were missing, and DeLorean was hiding them somewhere, and they showed the footage of the cars driving off.

A few days after that, I was taking one of my favorite shortcuts through Lakewood, the suburb where DeLorean Cadillac was located. My shortcut was a small road/alley, with far less traffic and lights, which went behind the businesses along the main road.

One of those businesses was DeLorean Cadillac, with a big parking lot behind the dealership. I'd passed that lot many times, and it was always a mix of Caddys and DeLoreans, but this time I saw that it was FULL of nothing but DeLoreans, packed in like sardines. I had no doubt that these were the missing DeLoreans that the authorities were searching for.

So, of course I notified the authorities where they could find the cars, right? Fuck NO. DeLorean didn't seem like a bad guy, just a major dreamer who got desperate. I always kind of admired him. So I kept my mouth shut, and made the authorities find the cars without my help.