You won’t find any disagreement from me there. I just think that when you set the expectation too high (stainless steel can actually be more nonstick than Teflon), people will give up and just go back to nonstick pans when they can’t achieve those results.
Regarding dishes that are solely the domain of Teflon, I think it definitely has a place for dishes that already have a high bar for execution. A perfect French omelette is hard enough on a nonstick that adding another layer of heat management puts it out of reach for most people. But like you said, there’s not much that I’d use Teflon for, so I just don’t have one after switching to induction.
I’d posit that your well-loved cast iron looks even better than new. For me, moving off nonstick pans was about sustainability (and money waste, who wants to buy a 2 year subscription to cooking?), but I can’t get over how beautiful some cookware gets just from being used. The patinas on cast iron/carbon steel pans reflect the dedication of their owners to a craft, which I’ll take any day over a colorful pan whose surface flakes just from looking at it.