In all low and mid market areas, BYD will slaughter the European auto manufacturers EVEN if they only sold ICE/hybrid vehicles. For the same reason Japanese, and later other Asian, manufacturers of audio equipment slaughtered European ones in the 70s/80s. Because they can provide an equivalent or better product for about half the price. Heck, BYD (and similar companies) may even slaughter the Japanese automakers if they aren’t careful. In high market areas, maybe not, or maybe not yet. And the US automakers have pretty much removed themselves from those markets before they could get slaughtered.
The fact is that BYD can sell decent vehicles, even pretty good vehicles, at a price substantially lower than an European automaker can sell. And even accounting for Eurocentricity, there’s no way a consumer in Italy, Spain, Romania, Netherlands, etc will say “I’d rather buy a VW for €40,000 than a BYD for €27,000 because it’s made in Europe”. Maybe Germans will say that at first, but even Germans at the margin will slowly defect to BYD instead of VW to enjoy the lower prices.
In technology (which now includes vehicles for the most part), there are ALWAYS new advances on the horizon. Always.
I think it depends on how you approach vehicles. If you like driving a new-ish vehicle anyway, and buy new every 5 years or so, then maybe lease for now. But beware, it is very likely that you will lease for 3 years (the typical lease period), and then at the end of the 3 years, the new tech isn’t quite here, and you will need to lease again. I call that the “lease trap”, and you end up in a new car all the time with ever increasing monthly payments. Or you could buy a new one now, and suffer through the normal early depreciation, AND suffer through the additional presumable deprecation when the new tech comes out. That’s why most people say the “sweet spot” is to buy about 2 year old used after most of the initial depreciation has been wrung out of the vehicle. In 2021, I did NOT do that because new cars (EVs) at the time were only a tiny bit more expensive than 2-year-old used cars (I checked all over for weeks and the price difference between new and 2-year-old used was never more than $5k which astounded me on a ~$55k vehicle). So I bought new instead.
The other alternative is to just keep thinking about the new tech that is coming and buy nothing. But that would go on forever, of course. 
Right now, the best deal BY FAR is a 2-year-old used model Y with low mileage. And if you really want ultrasonic sensors (dropped in late 2021), you could look for a mid-2021 (3-year old) model Y for an even lower price, but try to find a lower mileage one if possible. The same applies to the model 3 if you want a sports sedan instead of a crossover.