I think the only legitimate dispute would be that maybe more Israeli children were killed in the Oct 7 attacks? That seems like a reasonable and probably accurate criticism to me.
The article doesn't seem that well-written and seems a little all over the place.
A lot of the statements that we've all seen have mourned only the Israeli dead, and have said zero about the death of Palestinian innocents or the "context" of the conflict, so I just don't see this as being a particularly legitimate or persuasive criticism.