Considering X’s price is almost double the 3 or Y, strictly speaking I don’t think it’s worth the premium because the X is not twice as good as the 3 or Y. However, there are things in X that you can’t get in 3 and Y, such as air suspension, 6 seaters, FWD, etc. The driving dynamic is also different. 3 is very fun and agile. X is buttery smooth and more refined. Consider X as a luxury item. And just like any other luxury items, they are usually not worth the price. But if you can afford it, then by no means buy it and enjoy it. I really enjoy my X. Luckily for me, we got it when the price was still a lot lower than the current MSRP. That made the decision a lot easier.
And if you are considering other large EVs, here is the YouTube video of Tesla Model X and Rivian R1S comparison. After watching the video, I think I will still like the X better.