and a week ago I'd just dug up my old WNDR3700v3 to use as an extra WAP to provide coverage for the north end of my rather long and linear house...
.... so as of a couple hours ago, its running OpenWrt 19.07.3
Speaking of annoying Netgear features, the same 'model' WNDR3700 could have any of 3 or 4 different chipsets depending on the version. v1, v2 were Atheros, V3 is Broadcom, V4 is a different Atheros, and V5 is a MediaTek. *yuck*.