Very interesting! I had earlier proposed[1] that FB would have to start this arms race, of making ads that look different to human users, but not to computers.
The article points out that FB seems to be in a losing position since they need their ads to say "suggested post" and give those posts special options -- so ad blockers can always just look for that.
I think they can be a little more devious though -- say, make the CSS really complex so that the letters for "suggested post" only appear in the right positions for legit adds, and then have it load the options for the element from somewhere else. But that comes with a major code-complexity/debugging cost.