This is Ridiculous. It is such a MINOR freakin thing that it really shouldn't be worried about.
Fruit post workout is Fine.
Basically you can have any form of simple and even some complex carbs post workout.
The actual form that you choose is very minute in the big picture.
You want to eat fruit, go ahead.
You wanna eat dextrose? go ahead.
Just get some form of carbohydrates in yours system immediatly.
It's not like you will ALWAYS eat fruit post workout, you are bound to switch it up.
Don't worry about it, and focus on sticking to your meals, eatting them, and eating them on time, instead of minor details.