I don't think it's quite as black or white as you paint. It's not necessarily "admiring them" or "City f*cked up/Txiki's fault", but just because people represent our club doesn't mean we do everything perfectly.
Some posters on BM, seem close to bullying others, to tow "the party line", where we shouldn't debate or learn lessons, when things don't work out as we hoped.
In this case, we wanted Sanchez, (our preference was in summer, and we put in a low bid) , Sanchez wanted to leave Arsenal this window, (his first preference was City).
United were desperate to improve their squad with quality players and they have secured him with a financial package we were not prepared to match. They are driving up the price of players, I don't like it, but it's a market.
If we had the benefit of hindsight, would we have done things differently? I believe we would, but we shall never know.