Honestly it seems to me like a thing that a designer might be selecting consciously. You are disallowing yourself from teleporting, but you are also preventing someone else from teleporting to you. Then it's an individual rating of the benefit-risk ratio which thing you choose.

Could be that Tau'ri figured tanking a few hits with armor to allow transport was better than having to worry of having a nuke beamed on board at any time. This is kinda synergic with how explosions (to a degree) were dealt with by the innertial dampeners on the Bilisknir.

And we're debating this because we're all geeks and it's fun? :Lol