My point was that Australia/UK/US could have done this in a way which offended France less – invite them into the discussion, tell them that Australian wanted nuclear submarines, even tell them that the UK/US HEU-based submarines were more attractive than France's LEU-based ones – and offer them some consolation prizes such as engineering consulting, joint training and joint exercises, manufacturing of some parts. Maybe even officially bring France into AUKUS and make it AFUKUS.
Now, if they'd tried to do that, maybe it wouldn't have worked out – but it appears Australia/UK/US never tried, they did all of their negotiating completely behind closed doors, without telling France what they were doing, and then presented it to France as a fait accompli. If they tried to include France, and the discussions had broken down, France still would have taken it better than the current situation, where Australia/UK/US made no attempt to include them.
France is officially an important and long-standing formal ally to the US and the UK through NATO. Australia and France do not have a formal military alliance, but had been describing each other as "strategic partners". I think the way Australia/UK/US went about this has caused unnecessary damage to their relationship with France. They could had arrived at essentially the same outcome in a way which caused far less damage to that relationship. Viewed in that light, I don't think geopolitics is very relevant – whatever the value of France as an ally or partner, needlessly offending them is just stupid.