They aren't particularly relevant to a discussion on the fairness of the re-scheduling of the Super Rugby draw, but i would point out that the NBL completed their last season apart from the grand final series, and BBL also completed the previous season before Covid, so they arent really comparable anyway.
Their job is to play professional rugby. It is not to hit the road with only a few hours notice seemingly for five days, and then be stuck on the road for a month, especially when they had a similar situation last year that lasted between 13 and 22 weeks depending on who you are. These people have families, many of whom are away from their family and support networks, who were completely isolated in a 110 day hard lockdown last year without their partners. Again the situations you quote aren't comparable.