>>211865825
>Is he saying he shouldn't worry about their situation only or that he should... ?
Shouldn't.
>心配すべきなのは今の俺たちの現況だけというわけにはいかないんだよ。
If he thought the opposite, he would say
>心配すべきなのは今の俺たちの現況だけなんだよ。
or the like instead.
"Aというわけにはいかない" is like a semi-set phrase used when you think something desirable A is not feasible, what you can afford to and do freely as you like, taking all the other elements into consideration.
Here
A = "That the only thing to be worried about is our current situation".