Almaydeen wrote a great article pointing out that the impact crater is far too small for a 50kg Falaq1 rocket warhead which israel claims caused the explosio

This is the impact crater in Majdal Shams

This is a known impact of a Falaq1 rocket

So the blast crater looks nothing like you'd expect. And Falaq1 rockets do not blast into flames but rather have a big shockwave warhead, as they burn all their fuel on launch, we would not expect the fireball.

Lastly they are not GPS guided but just "dumb" rockets. Launched at an angle and calculated where they will land. So GPS jamming could not affect them. But Hezbollah never targets the Druze areas so this too does not check out.