Indeed - even hypothetically, when people are heavily invested in one course, and that course is then thwarted, then it it rankles.
Looking at the reports today though, about reservists being called up and 3,500 troops being made available, about £2bn being spent on 'no deal' contingency, about shortages of medicines and supplies, about supply problems for perishables and 'just in time' deliveries about access to information and limited access to a new satellite system that the UK has contributed to and uncertainty about whether a flight from Glasgow to Paris will be possible after next March - and all this a few months away!
It maybe that a reversal of Brexit would piss-off Leavers but that would be less of an issue than all the above, which will affect everyone. Hard to see where this is going though - The Guardian website is running a story tonight that May's efforts are now being focused on finding a way to get the DUP on board so that her deal passes: we will see, but if not then surely avoiding the above complications of 'no deal' would be better than annoying Leavers.
And yes, before you ask, if we ever get to Indyref2, then the lessons of Brexit need to be learned as regards proper preparation and if we ever get there, and if Brexit goes ahead, and especially on a 'no deal' basis, then the situation then may well be very different from 2014.