Interestingly, I bought a second IPC-HDBW4231F-E2-M ("boobie cam") and it's initializing as expected, even when hit with a modern web browser.
The first one (that required IE):
Device TypeIPC-HDBW4231F-E2-M-2.8mm
Software Version2.622.15OG000.0.R, Build Date: 2019-08-27
WEB VersionV3.2.1.780670...