I don't think the article was absolutist, binary, at all.
The issue is that for a lot of things, there is exactly zero foss options. The problem is not, and the article doesn't imply, that there should be a 100% foss, so that foss finally "wins".
Hopefully this lawsuit will be won by SFC, if it is, then anyone can sue their TV maker for the Linux kernel sources for their device and access to install modified versions of it, then replace their TV OS with AOSP/etc, or KDE Plasma Bigscreen or similar on a standard Linux distro.
https://sfconservancy.org/copyleft-compliance/vizio.html https://plasma-bigscreen.org/
That's not an alternative: at the end you don't get a TV, you get a streaming box.
Perhaps you don't care about OTA TVs in the first place, but that's a different point.
Can you provide some examples of things for which there are zero FOSS options?