Wi-Fi can be secure, but forget about it using standard consumer gear. I do some work from home and use a mixture of both Ethernet and Wi-Fi. Among other things, my Wi-Fi network uses certificate and user name based RADIUS authentication, it's also protected against unauthorised de-auth attacks. I use that Wi-Fi network for anything classified as "Protected" and below. Anything above that goes over Ethernet and varying layers of encryption.
For me, it's only partially about security. More about time sinks, avoiding stupid complexity creep, and the general precautionary principle.
When I do set something up, and it works, I want it to stay working just like that, effectively forever. Or until I decide to change it.
I'm not a networking professional, and don't want to have to play at being one.
Also my anti-WiFi bias is partially founded in a contrarian desire to live in as little RF noise as possible. Just in case increasing background RF level turns out to be medically a bad idea. (And there's an increasing body of evidence it is.)
As for updates, you *cannot* know exactly what is in an update. Unless you can disassemble the code yourself and examine it instruction by instruction. See 'time sinks'.