I'm a fairly dense biped, and the wind just pushed me across my icy driveway as I was taking out the trash. Luckily, forced movement does not provoke opportunity attacks. #dnd #mybrainworksdifferently

— Shawn Merwin (or a poor clone) (@shawnmerwin) February 13, 2019

I am not a fan of the logic behind that rule. Why would forced movement not provoke? What makes one who is the subject of a forced movement more able to protect against an attack than one who voluntarily engages in movement? And, sorry about the sucky weather. 4E began without that rule, and it resulted in immediate use of any forced movement to ping-pong foes back and forth. It has to be changed.

— Alphastream (@Alphastream) February 13, 2019

Oh sure. It makes sense. It is just not logical and that is too bad. That is the nice thing about running our own game. We get to suspend any silly bits that we don’t like.

There is also a narrative motivation behind the rule. Most forced movement is so sudden (falling past an orc on a ledge, being hurled away by an explosion, etc.) that a creature wouldn't have time to respond. There are exceptions, of course, but that was part of our design.

— Jeremy Crawford (@JeremyECrawford) February 13, 2019