I'd be livid if I was involved in any organisation that didn't use tools and arguments available (that are available to any equivalent organisation in the same position) to gain an advantage. Every union in the game would have tried to do what Ireland did, it's not cheating at all.
Unironically this time, the decision to play Osborne and have centre cover from the wing shows the plausibility of the argument too. Ringrose has started five games on the wing in his career, one since 2016. Likely, no, but enough for World Rugby's burden of proof which is where the problem lies.