Two yellow cards is pretty common, whether the first or second is for time wasting is pretty irrelevant, isn't it?
Plenty of players have got yellow cards this season for kicking the ball away (Ayew for Palace vs dippers in about the 60th min springs to mind) and that's the only one I can remember where a 1st yellow for time-wasting then got a second yellow/red (listed for statistical purposes as a "bad foul" but it wasn't). Do I also remember a player getting booked against liverpool when VanDick kicked the ball at him (with the singular purpose of getting him booked) from a free kick and then that player got a second yellow later in the match? Don't know and I can't be arsed trawling through stats on a Sunday in order to prove a point.
If the refs consistently gave yellows for other forms of time-wasting as they now do for kicking the ball away (but it's difficult to do, how long is too long to take a throw in/goal kick/free kick?) I'm certain there'd be many more cases of it