That was my first reaction too. I usually try to stop myself from falling into conspiracy thinking, but in this case it’s hard to do when a few days prior the Internet has been full with an alleged memo with plans to stage something dramatic for the press at this specific event.

Can’t rule out a real attack but at this point I wouldn’t exactly say it’s the option with the highest probability for this government filled with tv personalities at record low popularity…

It differs per community. Some of the more hype-y conferences I’ve submitted to require at least one co-author to review other papers as a condition to submission. I’ve not seen this at less hyped conferences or journals yet, though. But different communities tend to do things very differently, so many people will have different experiences.