If you want to go out in direct onshore and marginal winds, the short mast is a great advantage, in fact the only possible way
Apart from that, IMO they are to no use whatsoever (but many will disagree).
I never use my 83 cm mast for "normal" riding, way too short, and use 90 or 100 cm for freeride and waveriding
But when directly onshore, and the kite can not hang in the air without being flown aggressively, the short one is the only chance you got to get out
Apart from that, not used, so it is very rare it is used, but it IS used on occasion yes.
Even when shallow and waves, I prefer the long mast, as you can (when experienced) just foil over the sandbanks when low and playing in the waves, so no difference having a short versus a more versatile long mast.
If a beginner, yes, the short one will give some advantages - but later, IMO no.