Publisher of a claim has no relevance to whether the claim is true or not. A source being biased does not mean that everything they say is false.

Here’s the BBC, if you like them better.

https://www.bbc.com/news/world-middle-east-67144061

Based on available evidence, it appears the explosion happened in a courtyard which is part of the hospital site. Images of the ground after the blast do not show significant damage to surrounding hospital buildings. What the images do show includes scorch marks and burnt-out cars.

BBC Verify has shown the evidence to a number of weapons experts, some of whom say it is not consistent with what you would expect from a typical Israeli airstrike.

J Andres Gannon, an assistant professor at Vanderbilt University, in the US, says the explosion appears to be small, meaning that the heat generated from the impact may have been caused by leftover rocket fuel rather than an explosion from a warhead.

Justin Bronk, a senior research fellow at the Royal United Services Institute (Rusi) in the UK, agrees. While it is difficult to be sure at such an early stage, he says, the evidence looks like the explosion was caused by a failed rocket section hitting the car park and causing a fuel and propellant fire.

And the cause of the tragedy is this:

Canon Richard Sewell, the dean of St George’s College in Jerusalem, told the BBC that about 1,000 displaced people were sheltering in the courtyard when it was hit, and about 600 patients and staff were inside the building.

I agree that we don’t know for sure yet. but I don’t think it can be denied that a plausible story is that a failed rocket crashed into this courtyard that had hundreds of people gathered in it, igniting the rest of the fuel and causing a large explosion.

Or maybe the IDF really did decide to just bomb a hospital courtyard. That’s plausible, though seems unlikely to me, personally.