Papa Zulu,
Where is the flaw? The MPL scheme actually trains pilots to a higher skillset and to deal with the unforeseen as well as the expected. They spend more time (pretty much double) on the specific type, dealing with more failures and difficult scenarios than the ATPL route ever does.
Show me how time flying around in an SEP with no problems is better than many hours, on type, dealing with carefully constructed exercises designed to train to competency.
I'm sorry but anybody that slates MPL has no idea about it.
It's more expensive because base training is 12 landings. Lead in time is so much longer and it requires continuous monitoring by the company.