Sorry is this is a 'repeat' of any earlier post (cannot cope with 75 previous pages on this subject!).
It seems clear to me that some proper and immediate research needs to be undertaken given this 'opportunity' as to what levels of volcanic dust can be 'tolerated' my modern jet engines without using crews/pax etc as 'crash test dummies'
For example, why cannot test pilots in a 4 jet engined aircraft take off, shut down 2 engines, and then fly a controlled profile at various levels/locations etc in this dust cloud to gather data that can also be supported by a stripdown of the operating engines once back on the ground. IF the 'low levels' of volcanic dust did cause an in flight shutdown, the 2 remaining donks would be available for use once clear of the area. Such a flight would carry minimal risk, but the data gained would be invaluable.