The problem isn't Doku, problem is that people lost the sense of hierarchy..
We have 100m treble-winner winger in Grealish, who earns 300K per week and has proven himself as a stable player throughout the entire 2022 / 2023 season. He is pro and should always be regarded as a regular starter...
Doku is 21 years old young player, who has proven nothing and who needs time to learn & become stable deliver of results.. Therefore he should be regarded as a valuable squad player, who is used during rotations or injury situations..
We have a lot of players like that.
Haaland, KDB, Foden, Bernardo & Grealish are our regular starters..
Julian, Doku, Bobb, Kovacic, Matheus are our bench / reserve players..
Same applies to
Ederson, Walker, Stones, Ruben, Ake, Rodri
and
Akanji, Guardiol, Rico, Gomez and Ortega
if we look from that perspective, Doku is a great addition, young & talented player, who can be rotated with regular starters whenever needed..