Do you think that's the only reason for 'mass migration'?
Consider that in the last 20 years internet access is *globally ubiquitous* because of cheap mobile phones.
That in turn means that people in the poorest parts of Africa that 20 years ago had no idea whatsoever about how 'rich' Europe is in comparison, in 2026 not only can see what they don't have, but can communicate with those than can help them make that journey by land and sea.
War and envy (for want of a better word) are the two reasons.