Hamas is claiming all their strikes independently and not through the Joint Operations room.
This is a message to the PIJ to know that they should stop behaving in competitive manner to Hamas and know their place. Also message to Iran, Hezbollah, and Hezbollah media channels that try to downplay Hamas's role and try to make PIJ stronger than them.
Hamas is much stronger, much better trained, and more disciplined. All the strikes that inflicted casualties were done by Hamas and Hamas armed wing made sure to make this known.