They are already taking first steps to curb it.
IMO they should add a stacking (hidden) debuff… you get deserter, you get your well deserved break as usual. But for the next 2 hours afterwards, the next deserter is doubled, as well as the duration of the hidden debuff, so 1 hr deserter, 4 hours “on probation”.
That way Chronic leavers will essentially “soft ban” themselves from LFG if they don´t change their ways.