OpenWRT is a different scope than opnSense.

I have a few OpenWRT devices to cover WiFi in my home and definitely an opnSense on top of them for wan access and all the fancy stuff.

OpnSense can’t to WiFi access point, thanks to BSD limited WiFi cards support, and definitely cannot fit on cots devices like OpenWRT can.

As well as indeed opnSense is a better choice than OpenWRT for edge devices.

While OpenWRT would do opsSense job, at least in part, the opposite is not true.