Of course, he is. He shouldn't be, but unfortunately he is.
Otherwise, I would find it very hard to believe that from hundreds/thousands of players they scout, that the best our scouts could find was an expensive goalkeeper who played for him, an expensive CB who played for him, an expensive winger who played for him. Another defender who played in the same league when ten Hag coached. Another midfielder who played in that league too. Another midfielder whom ten Hag coached in the past. And from all the loans, there was a striker who played there too.
That is roughly half of the players we signed who somehow are related to him, and 4 players who have played for him in the past. People are living in a parallel universe if they think that EtH is not the one in charge of transfers. And our DoF is a DoF only in name, as someone said, we could have hired a food massager for the manager and would have had the same effect.
For comparison, Pep got Thiago from Barca to Bayern. No one to City.
Klopp has no ex-player of him from Liverpool. Ancelotti got no one at Madrid.
No manager of a big club I can think of since SAF left has taken as many ex-players as EtH has done. It is genuinely insane how the club allowed, if not encouraged, it to happen.
Also, why on Earth he should have a veto on anything? If Pep, Klopp and Ancelotti, three serial winners who are several levels above him do not have such a veto, why EtH should instantly have one?