It's time for this topic to come to a close.
I've used Opera, and like it, but it's just another among many Chromium-based web browsers, and since NVDA and other screen readers have long ago become proficient at working with Chromium then any browser based upon same tends to be completely or very nearly completely (if they've done a few odd bits) accessible.
But the topic strayed far away from anything that can be even vaguely considered as NVDA-centric quite a while ago. Please take this to the Chat Subgroup if anyone wishes to extend the conversation.
Brian - Windows 10 Pro, 64-Bit, Version 1903, Build 18362
The color of truth is grey.
~ André Gide