The traffickers should be relentlessly pursued and caught. They are responsible.
I do think that given that an overwhelming % of migrants who arrive in this way have their case approved, for asylum, family reunification etc , that there should be a sensible agreement between the UK and France (and Belgium, with coast just up the road from Calais) about assessing and processing people, relieving their desperation.
But in the end the criminal activity is those who take money for such dangerous attempts, and responsibility rests with those who choose to take what is now known to be incredibly dangerous. Given that they are in France, a safe country.
I do think in the past migrants may not have been fully aware of the danger. They may never have Serb the sea. No idea of the cold, the height of swell in the middle of the channel, the implications of a boat which does not have a rigid bottom, which does not have separate inflatable chambers.
But by now, the dangers are known.