Nope.
If all of Keane, Holgate, Doucoure and DCL are still here next week then we have failed to shift them. That failure to sell them doesn't make the purchases of O'Brien, Iroegbunam or Ndiaye "bad" in any way.
O'Brien will take Keane's place as third CB before Christmas. As a result, Keane will no longer feature in matches for Everton and we will immediately concede fewer goals.
Buying a fifth striker to keep Maupay, DCL, Beto and Chermiti company whilst leaving the defence and midfield untouched would be exceptionally dumb, and would leave Keane and Holgate playing enough games to get us relegated.
If we stay up despite not bringing in a striker, will you admit buying O'Brien was "correct"? It's not that simple buddy.