OpenWRT is a firmware replacement for the most part. So the release cadence is based on OpenWRT.
If these are proprietary, OpenWRT may not be able or not willing to utilize them. But this is a blanket statement, if you have specific hardware security features in mind then look at their hardware compatibility table to see if it matches.
Best hardware security feature is to support WPA3 if you plan on using WiFi. That’s most likely the weakest link.
Otherwise, OpenWRT is pretty secure by default, and you can take additional steps to harden it. Remember OpenWRT is consumer grade, and if you have a very intense threat model, I can’t say if it will be sufficient.