I love EAP, but I bought it when it was an existing feature and I knew exactly what I was buying and it worked pretty much as advertised, and now with improvements it does everything I expected of it. ( Well, except for self-park, and summon which I've never even tried because I have no need of it and was not part of my reason for buying EAP.)
I bought in late 2018, and I traded in a perfectly good Model S 70D. I got EAP+FSD because I felt like EAP would never really be that good without HW3. I bought at a time when HW3 was being promised for buyers of FSD. I got FSD despite hating the way it was sold. I really wish they would have had basic AP separated from FSD back then. Where FSD was simply "free autonomous SW/HW upgrades" for X years. Where they simply had a roadmap, and a bug tracking site. So basically you just submitted bugs, and problematic location for Tesla to fix for various L2 level capabilities (NoA, smart summon, etc). It still would have pushed the industry while not being an embarrassment.
FSD has ruined so much of the car
The awkwardness of trying to get a rational friend to ignore the whole FSD thing, and focus on just the car.
No driver monitoring as it wouldn't be needed for FSD. By far this biggest annoyance for myself while driving with AP is the nag. The Model S I had was so much better as the torque sensor was more sensitive, and the algorithm simpler.
No ability to transfer FSD to a new Tesla so you're stuck in the one you have.
No publicly announced valuation for FSD on a trade in. So you never really know how much you've been screwed by
Most of all FSD has ruined EAP. You love EAP, but even you would likely admit that its inconsistent. As an engineer I hate inconsistency a lot. To me inconsistency is a failure, and every feature in EAP is a failure due to inconsistency.
it's not just .1% inconsistent, but we're talking on the order of 20% or more.
Why is it so bad?
There is no feedback loop for owners to report problems in a fashion where we're told that they're being fixed or worked on. As an example I can report a maps issue to Apple, and it will get fixed promptly. They'll thank me for my contribution so that motivates me to report things in the future.
There doesn't seem to be any effort at fixing problems, and instead all the effort is on FSD. The FSD beta people have the report button.
The inability for Tesla to rev the hardware to address known issues. As a result Tesla/Elon have a "fix it in SW" mentality, and quite honestly SW fixes tend to be inconsistent. Where at best they're a patch.
As a result of the bet on FSD means that everything is riding on the FSD beta.
If Tesla releases the FSD beta to the general public in the next 12 months I think a lot of things will be forgiven. The reason is its so fundamentally different than the current FSD+EAP that a lot of the inconsistencies will go down. If they leave the report button than a lot of the "this issue has been there forever" problems will hopefully get addressed.
If Tesla releases Autosteer on city streets I expect a huge backlash. That might be what's on the order page, but that isn't what people are expecting. You can't tease hundreds of thousands of owners with FSD beta videos, and then turn around and limit it to certain things.
Once FSD beta is on the roads I think it meet the "you've shown a credible effort" requirement that buyers naturally have.
The other thing that will change everything is the subscription model. The subscription model will push resale values up of FSD equipped Tesla's. I'm generally pretty happy if I bought, and sold something for the same price even if it never matched what I was hoping from it. Like if Tesla gave me $8K for EAP+FSD I wouldn't hold it against them.