Why did you change, you were always very pro Iran.
I doubt many in Iraq will have a problem with Sadr's statement, many including extremists like Wathiq al Battat admitted that Assad used to support Al Qaeda in Iraq back during the early days of the 2003 war. They don't care about Assad, their opposition is towards erdogans project in Syria which if succeeds makes Iraq the next target.
That aside, Sadr commands ~30-40K strong peace brigades which I believe are not part of the PMU but seem to act mostly in favor of the country and largely according to gov policy. He cannot be removed just like that as someone else said.