I hear what you are saying, I respectfully disagree. Sometimes a little showmanship and tech whizbang paves the way and gets attention. I will point to the original Tesla Roadster built from Lotus Elises. It was not a car for the masses (nor really a car more a demo/kit car), but it definitely got Elon Musks attention among others and the rest is history.
I am already seeing very interesting reactions from my friends who have an EV bias. The gimmick suddenly makes them open their mind a little bit. I think for Hyundai the Ioniq 5N is there to open the door to Kona, Ioniq and Ioniq 5, the same way the R8 was a way for Audi to get people into A3 and A4.
BTW Kona is a $30k, 260 mile range EV.
We all came to this forum and I-Pace ownership from differing backgrounds, and I'm sure those perspectives flavor our current thinking. That is what keeps my interest in this forum eventhough there is not much "new" regarding the car itself.
You're correct that the Roadster got attention and enabled a company to get established with two higher end models (X and S) and selling tax credits. This enabled the fledgling company to run at major losses for many years before the 3 and the Y were ready for a mass market.
Now that EV's are "established", the market I'm wishing manufacturers would address is that exemplified by my neighbor - 40ish lady commutes 20miles each day 5 days a week, runs errands around town at the weekend, significant other drives a full size truck. Currently she's running a newish Honda Civic.
If we can get the millions of these off the road, the scale favor for battery manufacturing will kick in and the bigger ICE powered trucks and cars can be challenged with equivalent cost and range EV's. I'm not sure the economics work the other way around without selling manufacturers' tax credits .