Yeah, sorry but I don't believe the management team at the JC. They are trying to blame a single journalist.
However these stories played a part in dehumanising Palestinians and acted as a shield/justification for the disproportionate force used to destroy Gaza and it's inhabitants.
Saying oops, sorry we didn't do our due diligence is not good enough. Even I as a reader check the background of journalists and presume that a lot of ex military still have ties to intelligence, so read any articles they write with that in mind.
Even a journalist at the Israeli +972 magazine said this:
It seems that by firing Elon Perry JewishChron is hoping to put this whole affair to bed, as if decisions weren’t made at the very top to employ a fake journalist, publish nine fake articles without verifying sources, and use the paper [as] an active agent in a pro-Bibi influence op,”
Here is Ben Reiff article on this:
https://www.972mag.com/jewish-chronicle-elon-perry-netanyahu-intelligence/