737 FD off in wind shear

[de facto]

But on a normal take off with FDs off you don't get FDs pop up when you press toga to set take off thrust. That's a fact

Not exactly.

So you are saying that if I press toga again after TO (wind shear or not) they will pop up?

After 80 kts,the pop up function will work if you press TOGA so to answer your question:yes.