https://forum.openwrt.org/t/divested-wrt-no-nonsense-hardened-builds-for-linksys-wrt-series
As far as I can tell on my WRT1900ACS, yes.
Based on the latest commits, wpa3 w/5g was stable over the 5 days I tested, but YMMV. (I have no other wifi networks to contend with here - only my own local interfaces populate the spectrum).