Nope, not in this case. iPad OS has supported multiple windows of the same app for years now (since 2018 or 2019), and Safari naturally supported it out of the gate. Google supported it in Chrome very quickly, and Microsoft got around to it with Edge last year.
It turns out that while the rendering part of all browsers on iOS is Safari, the skin and UI elements (the “chrome” that Google’s browser was named after) are all custom to each app. And Firefox has been very poor at upgrading theirs.