The 3 was refreshed earlier in the year and the Y has it’s refresh incoming. They also update the cars all the time just not always stylistically. There’s not an “all new for 20xx” launch or the like that you get from others. The X and S now compared to say the 2016 are markedly different.
Also Nissan had the leef about 10 years ago so they’re not a new entrant and only have currently two products and I wouldn’t say they’re indistinguishable. Also I wouldn’t say that about the Seal, it’s clearly an EV and BYD is unashamed about that.
The existing OEMs need to get their act together. If you thought Tesla was hurting them, wait until BYD, NIO and Geely turn up in numbers.