The Pin on Spassky's Queen

Hello. I've been studying Seirawan's book Winning Chess Briliancies. Looking over the first game, I've encountered a headache: Spassky's first move looks very sensible to me, it puts the rook and queen on the same rank so that they defend each other. Thus, if after 2.Be2 c4 3.Qxe7 Rxe7, then the two players have made an equal trade. And yet, grandmasters Samuel Reshevsky and Efim Geller have both condemned 1...Ra7, and Seirawan labels it as dubious. He explains:

A controversial move - it leaves Black's Queen in an awkward pin on the a3-f8 diagonal.

To my understanding, the pin does not truly exist until Spassky plays 2...Nd7 and allows Fischer to respond 3.Nd4, as the rook no longer protects the queen.

Since I'm nowhere near grandmaster strength, please explain to me why 1...Ra7 is such a bad move.

I think the main problem is the knight must develop there. Going to c6 is currently out of the question, as it would drop c5 and give a large initiative to white, but on the other hand, if he doesn't want to have that problem he may have to spend a move or two to get out of the pin whilst still protecting the c5 pawn, and further delay development. The last reason I think it is criticized is because of Spassky's piece coordination. His rooks should be connected, and he has no place to double in the near future, so the just become easier targets and much clumsier pieces. There may be more, but that's the main idea I believe. Hope it helps!

That makes sense. The knight needs to be developed to d7 so the rook is misplaced. Seirawan reccomended 1...Qa7 instead, which gets out of the pin and keeps the c-pawn defended. After the retreat of the bishop, the knight can be moved without the threat of 3.Nd4.

Thank you.