Do you not see the irony in this? By admitting that you don't notice the (real and fairly recent and large) UI changes in Chrome you've just dropped all credibility from any argument you might have had about caring about the UI being different.
Firefox is really not that different. Even the keyboard shortcuts are the same.
most firefox changes are actually to copy what chrome is doing.
like removing the search bar and forcing sending everything you type in the address bar to a search engine, having a logged in account in the browser, etc
Firefox is really not that different. Even the keyboard shortcuts are the same.