A pi zero is to play with, an esp32 is so tiny, that it is more of a build for a single thing, and then set it and forget it doing that single thing.
You cant really stack more and more cool stuff onto it and keep building on it.
Amazingly powerful hardware for the price these little things.
Just use a USB adapter with a decent antenna.
Or literally any $1-3 SPDT RF switch? >80% of which are directly optimized and advertised for wifi and bluetooth?
I do like the Pico series and it would be cool to have one of those with memory protection.
If not for the success of Raspberry Pi, Broadcom would have zero SBC presence today. Like many companies chasing the high volumes and high margins, they don't see the market value in a segment like this. Thus things like poor docs and weird blobs. Raspberry Pi is open to the degree it is despite Broadcom, not because of it.
Ironically, that Broadcom tie could have caused RPi to eventually lose ground to other SBCs - because the likes of Rockchip just deliver more bang for buck in SoC dept. Broadcom doesn't seem to be investing in staying competitive in the segment. So RPi's edge is just the ecosystem being more important than raw price/performance.
For now though, that's pretty much on hold, because SBC price tags are increasingly DRAM dominated instead.
I myself am guilty as hell of this, of carrying my own remixed software, juggling patches atop upstream, and feeling like getting it upstream would be far more work and labor (and ultimately like I don't really have the confidence to assert to upstream). Meanwhile upstream is screaming their heads off everywhere that they can't take it anymore, that they are not ok. It sucks that we have such amazing power, such competency, but our scaling & social functions aren't scaling into the godlike powers that are now on tap! Alas.
Pine's Quartz64 has different peripherals attached but still afaik one of the best ways to track upstream support. It hasn't changed much since Linux 6.1 and I don't know if that's because there's nothing new or the page is just out of date. https://pine64.org/documentation/Quartz64/Development/
Having at least 1x1 802.11ac that's capable of working in the 5050 to 5900 MHz band will be a huge feature improvement. Such as to connect to a 'modern' AP running in an 80 MHz channel.
There's tons of environments where 2.4 GHz is a CSMA hell of noise and the performance in a single 20 MHz channel will always be crap, and ranges/real world distances between AP and pi will be very limited because of the extreme noise in the 2.4 band.