I've used it for years before Windows Update pushed the new Chromium-based one. It worked well for me, was faster and consumed less memory than the new one.
Yeah - I'm not arguing against its technical merits. Dumping it was mostly a business reason - it made zero sense for MS to continue making their own browser engine.
I don't see Microsoft ever adopting a strategy like this. It'd be nice, but given the disaster that Edge turned out to be — it's highly unlikely.