I think there is some confusion. Israel is not stopping Al Jazeera from reporting or denying them access to Gaza. They just see allowing them to operate inside Israel as a security risk, and because of that, have shut down their Israeli office. They are still free to go anywhere and report anything they like.
The "genocide" is being perpetrated Gaza, not in Israel, yes? So, nothing is stopping them from continuing to report, they just need to relocate their base of operations.