It would be awesome to have somebody show that OpenWrt-based routers are safe and secure. I looked into this problem about 10 years ago and my concluding was that stock OpenWrt was really questionable. Like, there is no auto-update story, but at the same time it is a giant (relative to what it should be, IMO) Linux distro full of vulnerability-laden components. This space is in dire need of a minimal security-first-from-the-ground-up alternative with a real trustworthy update story.
I admit I'm not super deeply familiar, but I would have guessed the opposite - that openwrt had no extra software included, not least because it's targeting devices where total disk and RAM are measured in megabytes. What components would you remove/replace that make it "giant"?
Google Wifi Is one of the main lines that aren’t based on OpenWrt.
I don’t operate any OpenWrt-based devices.
I always assumed it was priced outrageously to have a big enough margin to start fulfilling the preorders and refund requests from the original kickstarter. The device does not sell very many units so it won't benefit from bulk pricing.