Selectors have taken the decision by doing proper observation. I don't see the necessity of rethinking about their decision. Have you checked the performance of Litton Das in the last few matches? He hasn't scored above 10 runs in his last 7 ODI matches, his performance isn't good in T20I international matches as well. Big score of 2-3 domestic cricket league match doesn't prove that the player will perform good in big international events.
I also agree with it that if we saw the recent performance from Liton Das then we will not able to be satisfied. But have you watched Liton Das' recent Bangladesh Premier League matches? He is performing fairly well there, although it is not comparable to the International League, but his performance is improving.
However, I have doubts about how effectiveness Soumya Sarkar will be as an opener for the Bangladesh team. Because I am not satisfied with his performance in recent matches, except only the score of 73 runs against West Indies. Moreover, his situation is also very similar to Liton Das.
But the current Bangladesh squad is really quite hard to select. As always, after Tamim Iqbal's retirement, I don't see any good openers for the Bangladesh team yet.