EAP and FSD are terrible long-term "investments" for a couple reasons. #1 They are mostly vaporware relative to Tesla's marketing. It is unclear whether this will be "resolved" within the next couple years, but judging by Musk's track record of overhyping FSD, probably not.I do think Autopilot is a good long-term investment, but if you're not planning on keeping the car long-term, then unless you can use the features as they exist today, then it may not be worth it for you. I plan on getting a Cybertruck specifically for the 500-mile battery, and I'll probably spring for Autopilot up-front just because I plan on keeping it long-term, so if they get AP sorted out 5 or 10 years from them, awesome! But yeah, I think Autopilot is a much more complex problem than Musk realized...like launching rockets into space is literally easier than figuring out how to do true self-driving cars!
Secondly, although the average American car on the road is over a decade old, that does not apply to your typical Tesla buyer. They are almost exclusively upper middle income households and above, and typically they aren't buying a brand new car with the intention of long term ownership. Because EAP/FSD are non-transferable to your next Tesla, they are terrible for the consumer who's simply not interested in long-term ownership.
I realize you're seemingly the exception to the above, and that's assuming you can even buy a Cybertruck for less than $65k, ever. Perhaps some day, Tesla will again offer something for mainstream car buyers (i.e. the previously affordable Model 3 and Y SR+), but I wouldn't hold my breath waiting for them.