The GPU, sensors, trim, motors, and batteries have improved in those 5 years. I have a 2020 X and I am considering when to update. While the S and X haven’t gotten a significant improvement like the 3 and Y have they are still substantially better than before. Despite the memes I’ve consistently tried the other options, and have tried the BYD, Zyker, MG, etc available in Asia, and the Tesla are still far and away the best cars especially if you consider them in combination with the supercharger network. I think they have slowed their pace of improvement surely through a lot of Musks self inflicted fault, but the competition hasn’t yet surpassed them.

For those boosting BYD, etc, the finish is shiny but low quality, and is rife with safety red flags - an example being by in large you can watch YouTube and movies and sturr on the central screen while driving. (It’s scary in Asia with grab drivers watching videos while weaving in and out of traffic) - but the price is good.

I have a 2020 model X as well and I love it. I have no plans on upgrading which oddly is because it doesn't have the interior review mirror cam for FSD to yell at me for silly things like looking at a passenger to talk while on FSD and it still drives like it did on day 1 (60k miles ago, have only done tires and minor warranty calls). Honestly a fantastic car and now that it's paid off I'm like yep I'll keep this for years more. Keep the car it's great!

Actually to edit this comment - the main (only?) reason I bought the car is because if I'm in an accident I want to try to be in safest car possible and if my sig other is driving I want them to be in the safest car I can find. I thought that paying a premium at release in model X 2020 was well worth the premium if people I love are in it.