stats on online reading suggest that the inverted pyramid is even more essential here than for print, as everyone makes their own decision when to close a tab, and vanishingly few read the full piece most of the time.
That said, the purpose of a piece of writing isn't necessarily to communicate a list of increasingly less important facts--which is what fits best with inverted pyramid. Different people have different preferences. I'm not necessarily writing things to maximize eyeballs on the first and second paragraph.