Any applications submitted on or after 4 April 2024, who are granted, are restricted to jobs on the Immigration Salary List. Any permission to work granted will come to an end if their claim is refused and any appeals rights are exhausted because at that point, they are expected to leave the UK.
Because Britain can offer them more financially than most EU countries. If they were looking for safety they would be happy to remain in mainland Europe. They know if they can make it to Britain they will be looked after better in terms of benefits, housing and free healthcare.