Ok - but this isn't about a PMQ response, it's about the policy - specifically the policy related to Borderforce Command and the Small Boats issue which is the case in point at the moment.
You have said that the response proposed will make little difference - what are you basing that on? Are there papers you have read on it showing increased international co-operation and resources into targeting criminal gangs is an ineffective way of dealing with the issue? You have said that another way will be found and sure, it might, but the reason that boats weren't really used when smuggling on lorries etc was possible is, I assume, economic. Any reduction in profitability for the criminal gangs reduces their incentives to continue. It also reduces the affordability for migrants who (again an assumption on my part) probably have limited access to resources. It's the same reason that if people are deported they aren't 'just going to make their way back again.' which is another argument I have seen. Some may, but I imagine many will have borrowed or saved for a long time to cover the smuggling fees. You have talked about the limits of co-operation and how money would be better spent elsewhere and that argument may well have merit but I think there is still a lot of ground to be gained by seeking to increase resource and working on a unified, cogent strategy. In general I agree with the UN ODC
https://www.unodc.org/toc/en/crimes/migrant-smuggling.html
Still we will see in time, you might be right and other states/the EU may laugh at Starmer's naïveté and he will be rightly punished at the ballot box if he doesn't produce results.