I think most Spurs fans want genuine, indisputable upgrades who come in and can be immediately expected to improve the team. I don't think that this is an unreasonable expectation (Or wouldn't be, at almost any other club with our revenue streams) but it appears that is the way some feel. If we had such a window, I'm almost certain the fans would applaud it.
The idea that people are critical of this window because they would complain about anything is ridiculous and ignores the reality of the window.
We got two players, neither highly rated and both in positions that were not in need, unless you see Kulusevski as a MFer, although in that case the argument could be made why not get an actual MFer rather than someone you hope can move there. Those are legitimate concerns with this window.
In this window had we got someone like Guimaraes instead of Bentancur I would easily say it was 5/10 maybe higher, Add a mediocre back-up striker like the rumoured Morata again 5/10, a better than average back-up like Zapata 6/10. If we added top deep lying midfielder like a Bissouma/Neves easily 7 or 8/10.
Plenty of ways for people to be happy with this window without us having to bring in unreasonable players or having unreasonable expectations.