Is it permissible to switch from the Maliki school of thought to the Hanbali school of thought regarding the issue of the congregant's recitation of Al-Fatiha, after the person switching has come to believe that the Hanbali school of thought is the most correct and preferable?

Whoever was following an opinion on a matter and then a stronger opinion became clear to him, he should shift to the opinion that has become preponderant to him, and he will be rewarded for that. Indeed, it is obligatory for him to do so if the ruling of Allah and His Messenger becomes clear to him, and that he should not follow anyone in contradicting Allah and His Messenger.