The main roles in the government of Lebanon are split among Sunni Muslims, Shia Muslims and Christians. The president is Christian. The prime minister and speaker of parliament are muslim (one Shia and the other Sunni).
I am not saying this was a good system - quite obviously it has not worked well. But to blame all of this on Muslims is nonsense.
Also important: some features of Lebanese government are invariant to demographic changes bc the government has declined to conduct a new census.
For reference: https://en.m.wikipedia.org/wiki/Politics_of_Lebanon
Your “analysis” kinda leaves out that salient fact
I too categorically don't agree with blaming it on Muslims, I do however reserve judgement about blaming it on Islam - it could have had an effect or it could not.
There are plenty of other countries in the world that have economic problems where the Muslim population is insignificant.
Absolutely true. I still don't think the hypothesis should be rejected just on the grounds of it sounding Islamophobic, it should be rejected on the grounds of it being incorrect.