Originally Posted by
vicarious_MR'er
..Since you bought your child a seat, this person has no grounds for complaint except to ask the FA for a new seat for himself as a courtesy if there is one available...
Buying a seat doesn't mean buying a right to prevent a person in front from reclining. I'd be quite annoyed quite frankly. I suggest getting a smaller carseat (ours, babytrend, leaves enough room for full recline on CRJ) or booking bulkhead, E+ or similar 33-34" seat pitch options.