It's been their M.O for years. All death numbers in any conflict with gaza only comes directly from their ministry of health, no independent observers allowed. All news agency in the strip are fed information by Hamas, they have no agency or access to any other source, reporter routinely get kicked out if they don't tow a certain line.
They have been caught lying countless times already. Double counting dead, recycling dead bodies, counting militants as civilian and miscalsfying under 18 militants as children.
With that said, brining that up is usually pointless as Israel is directly responsible for enough of numbers.