I'm not doubting that there can be issues with altitude and it is obvious there will be but what are the calculations based on? How accurate will it be? It may not be accurate at all.
It is the same with flying after diving. No real research as been done. There has been some recent studies but the data are not conclusive other than to suggest some people may be fine with waiting as little as 18 hours while others may need 36 hours.
I've had an Mk1 for almost 3 years. While what is available in Garmin Connect (and now the Garmin Dive app) has improved over the time, it is still terrible. I still can't enter a meaningful SAC.