[skeeter2020]

It may look like it works "just as well" but that's not true. There are numerous things that impact performance and effectiveness that are not possible with chromium-based browsers, or at least have to be done inefficiently, including

* pre-fetching

* html filtering

* use of WebAssembly

* data compression and private/incognito mode

[Pay08]

Edge has its own extension API in addition to the Chromium one, it's possible that they've managed to mitigate or eliminate these problems.