The NGOs in this case work with the people smugglers.
The "migrant rescue efforts" cause more people to take the risk. This results in more deaths and illegal crossings from people listening to people smugglers.
It is illogical, not to mention callous. And yet the exaggerated rhetoric persists and whips up negative sentiment towards literal life savers from braindead segments of the far right.
They're wrong about encouraging fleeing too (as if that even needed saying) as I've pointed out elsewhere on the thread.