I disagree, because the forward assembly is more expensive than the glider already. A forward reinforce point that you can build anywhere instantly without royal engineers is a very powerful thing. I think its a good bargain for 150 mp.
it's hardly "anywhere". On most map it's very difficult to land the glider in good condition. I've had glider becoming unusable just by the landing alone.
enemy AA can also "destroy" the glider during the approach. You can't kill the commandos before they actually spawn but you can definitely prevent the use of the glider.
forward assembly also have the advantage of acting as forward weapon rack and upgrade-able to forward retreat point.
glider drop is also more lengthy and loud compared to the other insertion.