i.e Elon's Time Scale are not very reliable. Although I have come to the conclusion he does it on purpose to push the team to come up with the results.
And even with FSD: if you look at the new beta release released two days ago, it is an amazing improvement, check out the first user reviews.
I'm betting that this won't be the case until about two decades from now. Battery cell & pack production will be a strategic requirement for any vehicle manufacturer that wants to produce in volumes > 100,000 vehicles/year.
Also, the goal posts aren't fixed -- if your commodity battery packs cost 10% more than those the competition have access to, but are still expensive enough that they make up a substantial portion of the total vehicle cost, you won't be able to compete.
So even though battery cells will eventually reach a point where it's "easy" to make an EV, there will already be enough competitors that make it economically impossible for new entrants to compete.
As an investor they are plenty appealing to me. They made 23% gross margin on their cars excluding credits, and operating margins have also increased every quarter, now at 9.2%. These kinds of numbers are unheard of for an automaker. And they achieved these numbers while building out three factories.