While I appreciate your many corrections of my  incorrect Lunis - heaven knows I make many of them -  in this case your correction is incorrect.   Or at least it will be incorrect soon supposedly. 

My googling to correct  the miscorrection,   doesn't really answer the question about whether  the DuckDuckGo "browser app" will have  MS Edge's  goodness with respect to speech recognition:  it will be based on the "OS native  rendering engine", which on Windows is arguably chromium blink / Edge WebView2, in much the same way  all iOS web browsers are based on Apples WebKit.

But being based on the same rendering technology doesn't mean it will have the same higher-level UI stuff.  in much the same way that Google Chrome and Microsoft Edge  differ, even though  they share a lot of underlying technology.

My bet is probably not :-(.   Especially since  it is now more and more standard for speech recognition stuff to call out the cloud for help, which somewhat goes against DuckDuckGo's privacy imperative. :-(

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December 2021: "Now DuckDuckGo Is Building Its Own Desktop Browser"

https://www.zdnet.com/article/now-duckduckgo-is-building-its-own-desktop-browser/

DuckDuckGo CEO Gabriel Weinberg details its desktop browser in a blogpost recapping its milestones for 2021

So, the DuckDuckGo browser rendering will rely on Edge/Chromium for Windows, and Safari/Webkit on macOS, The Verge notes. 

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https://spreadprivacy.com/duckduckgo-2021-review/

The Privacy, Speed, and Simplicity of our Mobile App Comes to Desktop

It's not a "privacy browser"; it's an everyday browsing app that respects your privacy because there's never a bad time to stop companies from spying on your search and browsing history.

Instead of forking Chromium or anything else, we’re building our desktop app around the OS-provided rendering engines (like on mobile), allowing us to strip away a lot of the unnecessary cruft and clutter that’s accumulated over the years in major browsers. With our clean and simple interface combined with the beloved Fire Button from our mobile app, DuckDuckGo for desktop will be ready to become your new everyday browsing app. Compared to Chrome, the DuckDuckGo app for desktop is cleaner, way more private, and early tests have found it significantly faster too!

DPG15.6 (also DPI 15.3) + KB, Sennheiser MB Pro 1 UC ML, BTD 800 dongle, Windows 10 Pro, MS Surface Book 3, Intel Core i7-1065G7 CPU @ 1.3/1.5GHz (4 cores, 8 logical, GPU=NVIDIA Quadro RTX 3000 with Max-Q Design.