The Spurs did nothing but encourage Pau to opt out. Other than that, they hedged their bets pretty well. If they had actually traded LMA only to find out that pushed Paul away, that would have been one thing. But instead they set themselves up for contingencies and were able to pivot when those didn't happen. Only issue is that they should have just let Paul opt in and work on dumping him. I question their motivations, but their planning wasn't bad.
If you're going to stand up here and go, "I think the FO is incompetent because they didn't commit to keeping LMA sooner", I'm going to call you a liar. You very much don't think that, if your complaints in this thread and apparent soreness over Paul not being a Spur is any indication. Maybe by some miracle you didn't mean, "I think the FO is incompetent because they didn't get rid of LMA in time to sign CP3". Maybe. The greater point, though, is that you're assuming PATFO were willing to do whatever it took to get Paul but ed it up rather than then knowing full well that Paul wanted LMA over the other options and just decided to disregard it. They could have "done their homework" while also deciding that Paul only made sense if they ran a certain type of roster. Whether they're right or not is something we may never know. But to be honest, CP3 had no place in this conversation any more than KD would.