If you are wholly responsible for the aircraft cost as a full charter and are selling seat tickets on that aircraft as the only ticket agent then you are in an identical position to an AOC operator operating their own aircraft - that also do not need an ATOL for seat only sales!
Independant oversight of some "less regulated" operators would be more welcome / increased ramp inspections - other than that there is ZERO problem with ticket agents and there is no real need to blow this out of proportion. The LET 410 is a very lightweight aircraft and obviously high wing - knowing the storm was coming - was the error of the ticket agent not to play safe and cancel flights or having their own SOP's or ops manual that defined the weather limits in agreement with the AOC operator "who will fly for food".
Operating a very light weight high wing aircraft on public transport flights in winds gusting 56 knots was a dumb decision!
If you are a ticket agent chartering an aircraft you at least need an ops manual and a very structured crisis management plan that dovetails into the AOC operators. Just my opinion!