Yes they have.
Firstly, Babar picked him for Peshawar Zalmi and gave him chances unlike Sarfaraz and Quetta Gladiators. Getting a permanent spot in the Peshawar Zalmi XI boosted his confidence and gave him the limelight which propelled his career and helped him play for Pakistan.
He wouldn’t be where he is today without Babar and Zalmi.
Furthermore, Babar and Rizwan is the most successful T20I opening pair in Pakistan history, and yet Babar vacated his spot for him. He could have easily slotted him at 3, and had it happened, the resident clowns would be labeling Babar selfish for not letting Ayub play in his preferred role. It was a big sacrifice from Babar.
Saim failed to perform but he continued to receive backing from both Shaheen and Babar during their captaincy and also by Rizwan.
Yesterday, he played a measured innings and didn’t play any funky shots. His SR was 65-70 for the better part of his innings and this is because he has been under the tutelage of Babar and Rizwan.
The only person who has actively tried to sabotage his career, apart from Sarfaraz, is Aqib Javed who gave preference to Sahibzada Farhan in the T20 series vs Australia, but Saim slapped him in the face in South Africa.
Saim will have to work very hard, keep his head down and demonstrate 100% dedication to have a successful career, but he is in safe hands under the watchful eyes of Babar and Rizwan and if he cannot make it work, he will only have himself to blame, because as a young batsman, you can’t ask for a better mentor and captain than Babar and Rizwan respectively.
In white-ball cricket, particularly T20Is, strike rate is widely regarded as equally important—if not more so—than batting averages. With openers from the world’s top teams maintaining strike rates well above 150, Babar Azam and Mohammad Rizwan cannot realistically be considered Pakistan’s “most successful T20I opening pair” when their career strike rates remain below 130. Their high consistency and averages come at the expense of pedestrian strike rates, which has hindered the team's progress and, at times, turned Pakistan into a subject of ridicule in T20 cricket.
While it’s true that Babar and Shaheen have played a role in Saim Ayub’s development, Rizwan’s failure to advocate for his inclusion in the T20I squad after a successful ODI tour in Australia was surprising. Credit for Saim’s reintroduction goes to Agha Salman, who backed his inclusion during the Zimbabwe series, ultimately paving the way for his selection in South Africa. Even more surprising was Saim being sent in at one-down rather than as an opener in South Africa, a role he proved himself in during the very next match.