Camry MSRP is $26,220 Model Y is $46,990
I would give you the benefit of the doubt that perhaps you're not using US prices and Camry's might be 76% more expensive where you live, but I doubt it.
TM3 base model for me came out to about 35K w/ tax credits.
If you include how much you save in gas it checks out.
Furthermore, while the model 3 has the same wheelbase length as a Camry, there are smaller cars that have the same passenger capacity. As an example, the model 3 has an internal passenger volume of 97 cubic feet, which is slightly less than the Civic's 99 cu ft. So if that is the metric which matters to you, well 23k is now the price to beat.
"Doing X is slightly harder than I want, so I will use that as a basis for justifying something more expensive while still feeling like I did something prudent" is a pretty transparent move and an indicator that you aren't price sensitive.
As for the gas vs electricity price costs offset, I only drive 5k a year, so cut that number in half. Lord forbid I live in an apt and park on the street, then I'm truly effed.
The model 3 is an expensive fast car. That is okay, better than okay, that is awesome and there is no question you get a lot of bang for your buck. I'd love to own one! That said, it isn't a Honda Civic, Toyota Camry, or $OTHER_PRICE_ECO_CAR, and trying to draw such a comparison is all kinds of odd.
https://www.edmunds.com/car-comparisons/?veh1=401884809&veh2...
That's base price, and doesn't even account for significantly lower cost of ownership.