LTC4418 interfacing VALID1 with a microcontroller
You're looking at the Absolute Maximum Ratings. Those are the values you should not exceed when forcefully sinking or sourcing that pin.
So, don't draw more than 5 mA from the pin, don't source it with more than 2mA.  

Without this "Q?A" or "Q?B" transistor, you would be sourcing 3.3V/10k = 0.33 mA, so, the circuit is fine to me.