Yeah they basically exist because the nation has no army. You'll find the occasional nutjob (Mossad? never know) insisting the Lebanese army is stronger but this is generally framed through their collaboration with the IDF to crush Hezbollah. Even if the Lebanese army was completely on board with that, it's obviously insane, but I have also heard that from Lebanese people, that the army is not even consistently like that & many of them are too sympathetic to Hezbollah to ever actually fight them. Probably depends on the region & I'd imagine the army is trying to keep track of that "problem" internally & taking it into account when deploying it to suppress pro-Hezbollah protestors