For me, the implication of what you are saying is 'it could have been different but for conceding the first goal' which I have down as quite a banal observation but also a rather large hypothetical.
If (nearly) every player plays badly as they did today it can usually be put down to poor tactics.
I think you know that's not what I'm saying, and it's fairly poor form on your part to deliberately misrepresent my point.
It's quite clear that I'm not saying 'it could have been different but for conceding the first goal'. I'm saying Spurs created nothing and were looking fragmented and frustrated. I assume that was Koeman's plan (which to me was reasonable), and then that entire plan is dismantled by an individual error that Koeman couldn't have possibly legislated for.
Was the initial set-up limited in attacking terms? Yes, I can concede that to some extent, but we did have comfortably the better attacking situations before the Robles mistake, and didn't have the final pass or shot. So again, I'd say that was working alright.