The wars definitely didn't help, but I think the argument that this issue might not even need to be discussed if it weren't for them is fundamentally incorrect. Let's not forget that the U.S. didn't invade Syria either.
True, although the destabilisation of Iraq has no doubt been a big contributor to the emergence of Daesh to such a position of power. Not that that especially relates to the other rebel groups, of course. Sponsoring of regimes such as KSA's by Western governments is more damaging, IMO.
Knocking out Gaddafi in the way they did has kind of screwed Libya up.
Does Egypt receive a lot of Libyan refugees?
But yeah, many of the migrants are from West Africa too.