At least in North America I don't think this is true. GM can't reliably produce the Lyriq or Hummer and is ending the Bolt. Ford has stagnate sales on the MachE and Lighting porduction was stopped during Q1. Toyota and Honda are MIA.
The supercharger access is only a factor in the US. Some people really enjoy the vehicle-to-load capabilities of the EV-6. Aesthetics both internally and externally I think are bit nicer on the EV-6, but that's subjective.
- Cockpit -- EV6 has a panoramic (horizontal) display, plentiful buttons, and a heads-up display. I found this much more ergonomic for my eyes and hands than Tesla's all-in-one center-mounted display.
- Availability of Android Auto/CarPlay -- Tesla's software is more polished than Kia's but I'd rather project my phone. All my stuff's on it.
- EV6 is the #1 recommendation for its class in Consumer Reports as well as #1 in projected dependability for same.
I cancelled a Model 3 order and went with an EV6. My reasons:
- quality concerns (which possibly are overstated for the average purchase)
- worries over phantom braking
- V2L
- CarPlay
- I was swayed by Elon's politics, but that likely wouldn't have mattered if it had been a slam dunk decision for me.
- Supercharger network is a lesser concern for me, as I own my home. I did do a road trip from Houston to San Diego and back. As far as I could tell, between major cities, EA vs Supercharger coverage was equivalent along the relatively unpopulated stretches of I-10 and I-8
However, given the price differential now vs then, I would likely go for a low mileage used Model 3 now.