This reminded me exactly of that Dropbox design page at dropbox.design - it was the exact same frustrating experience. If this is a trend please make it stop.
Perhaps something along the lines: "Wow, look at that ugly page from Dropbox. My eyes hurt! Let's make ours even uglier!"
It's all about "Designer experience", not "User Experience" in this case (i.e. trying to be edgy for the sake of it, in order to impress your designer / PM peers)
I'm unsure to be honest.
I have tested on Firefox 59 and Chrome 65 in Linux.
This is fucking mental, seriously.