Imad Wasim played very bad and he should be expell out from the team and youngsters should try.
But Pakistani cricket is referenced cricket and nobody can enter in team without reference.It is very hard for Pakistani team to qualify for 8 eight teams because Pakistani team players are referenced players and they are not selected on merit and that team is not eligible to play the World Cup.
Imad Wasim still didn't played well in the match against Canada too and he was the only bowler who did not got any wickets in his four over spell.
Also i don't think that any team like Pakistan with so many good players and all of them being selected on the basis of reference and not performances
I think there was a must for Babar Azam to came at the opening and he also could do an opening with Saim Ayub, if not Muhammad Rizwan. I think it could be best decision instead of to have Rizwan with him because in the PSL we have seen Saim Ayub was more comfortable with Babar Azam at the opening.
By the way, there was also that now he is not hitting or look shots or other due to pitch conditions, he played amazingly only at leagues but not here and the answer to this question, no bodies knows. By the way, without Babar Azam, the team is not complete and as we have seen Rizwan and Saim Ayub have done nothing at the power play but when Babar Azam came then Rizwan also started to play.