I can give you one hint about picking 05/22/19 over 5/22/18 that's a little easier to grasp aside from the so far undisclosed/underlying stuff that actually makes it a fantastic date.
As a refresher, the Spotify error date was 05/22/1905. Add 113 years to that to get 05/22/2018.
So far, 113 has been sort of a cursed number that turns up buried in places when you look too hard, and always ends up being associated with dashed expectations.
However, 114 is quite concrete - that 2:57 timestamp on the Cosecha console (2x57), 57 days passed between the tweets on 09/27/17 and 11/23/17, the latter of which was playlist video 114 (Seven Forty Seven)
So in the end, it makes more sense to tack 114 years onto that "error" instead of 113 years, when we look at the data that we already have versus what we would all want, which is short term gratification.