IDK, for me it seems the worst plague are the sites that when you search for something like "how to reverse a pushed commit in git" don't give you a single sentence answer you seek, but you scroll and scroll over, what is git, how it works, why do people use it, how to install it, if you're lucky the answer will be at the very bottom after you clicked through the infuriating cookie consent and you closed two full page video ads. If you're unlucky the answer is hidden somewhere in the "content"...
Oh and comparing mobile with desktop? What is it on the desktop with all the shitty sites that try detecting you're moving to close it(often when you just move your mouse while reading) and they suddenly try to take over the entire window with some full page flashing modal dialogs. Insanity...
My take on why this happened is twofold: 1- Google, yes. 2-the stupid cookie consent law of the EU. Yes, it made launching a huge window obscuring the entire site's content on entry acceptable. It was all downhill from that.