He's saying the attack was pointless, chaingate or no chaingate, so there's no need to nitpick. I'd also add throwing away the Ax-3-Domaines stage instead of using every opportunity to put time on Contador, but I don't think the way he climbed the Tourmalet was a mistake; his usual tactic of half-hearted accelerations had failed and he needed a different approach. Judging by what we saw in the ITT and by what's transpired since the end of the TdF, it could have worked.