Obviously it was a troll act, "click-bait" to see if the usual MS haters would would bite - and they did, hook, line and sinker - with their usual rhetoric.
Why else limit the question to only Chrome and FF when there are so many excellent alternatives? For example, there's Pale Moon, Brave, Torch (one of the best if you like to grab videos), Vivaldi, Opera, and Tor - not to mention IE and Edge.
And why else tell IE users to "just leave" if not to incite?
I personally think these type threads should automatically be locked because all they do is bring out the haters, bashers, and totally biased opinions!
No browser is best at everything. No browser is the fastest everywhere. Browser security is almost entirely dependent on the OS and its security - and of course, most importantly,
user discipline.
The best browser for you is the one you are used to and like to use. Me? I like green. But blue is nice too. Your orange one sucks.
****
Netscape was the best and only one I used from its inception until my company pried it out of my hands and our computers by threatening us with disciplinary action (and totally locked-down systems) unless we got on the corporate bandwagon and switched to IE5. Once I got used to IE5, and especially after IE6 came out, it was the only browser worth using, IMO. It was great. And contrary to all the rumormongering, I never fell for all the security nonsense and "hype" Mozilla and the FF fans were spewing. It was simple to shut them up and stop them in their tracks by asking one simple question, "Did you STOP getting infected
JUST by switching to Firefox?"
Of course, none could answer that with a "Yes". Why? Well for starters, the vast majority were
not getting infected with IE in the first place! They just hated it because it was "Microsoft" IE. And the rest did a LOT more than "JUST" switch to FF. They also changed and/or implemented decent security. They stopped being "click-happy" and they stopped indiscriminately inserting floppies and downloading and exchanging files, etc. In other words, they became security aware and implemented a security discipline that was and still is required of all users, regardless their browser of choice!
So we never changed from IE and "Surprise! Surprise! Surprise!" Our systems were never compromised! Imagine that.
When the first Edge was released, I became disenchanted with IE. It seemed MS was neglecting IE. I even wondered if they were intentionally making changes to degrade it - I suspect to "entice" users to Edge. IE began crashing, pages were taking forever to load for failed to load completely, and there were other issues that were not getting fixed.
So I started to hunt around for a new browser. The first Edge was a total disaster and clearly another MS marketing blunder and bumbling, mis-managed executive decision!

And yes, I bash MS too -
when due! The first Edge clearly was an unfinished product and NEVER should have been released when it was, or how it was.
So I switched to Pale Moon - a forked FF and was happy (with a few reservations

) with that for many years.
But now I have switched to the new Chromium based Edge and it is great! It is fast and it supports almost all Chromium extensions. It does everything I need a browser to do. I also have Chrome, FF, IE, Pale Moon and Torch installed, and will occasionally call one or more of them up to see if a rendering problem is unique to one browser, or the site. But for sure, the new Edge is my default and primary browser, and likely will remain so for awhile.