When I sit in 1A on a CRJ-900, I've never had to answer exit row eligibility questions, had the boarding pass beep and flash at the boarding scanner, or been questioned by FAs. IIRC the same is true for the E75, but since I ride them less frequently, I think I've only once been in 1A on that aircraft. However, common sense is that these are the closest passenger seats to the forward doors. If the FA in the jump seat were incapacitated, it would be important to have responsible and able adults in these seats. So my answer would be technically OK but not morally.