Unlikely to be Israeli dissidents in a Gaza West Bank hospital, and if they were Palestinian dissidents against Hamas, it wouldn’t make any sense to target them.
And if they were journalists, we’d already be hearing about it from their publishers, as we have with other journalist killings.
The most likely scenario is that they really were members of Hamas, but that just serves to highlight that the atrocities Netanyahu’s government has otherwise engaged in have been unnecessary.
Edit: Correcting myself, because accuracy is important.