Yeah been wrestling with it myself. Donít rate Walsh at all, but if Henry and Lookman develop how I think they should - heís potentially got 4-6 hits on his CV.
I don't think the two views are necessarily inconsistent with each other though.
Of the players you and @Mick 1995
have mentioned, Sigurdsson, Onyekuru and Lookman all look to be talented players. In isolation, they're all decent signings. But they've also all spent large parts of their career playing down the left as attacking players. (You could possibly throw Bolasie and Sandro into the mix there too.)
Or the whole 'three number 10s' (plus Davies and Vlasic...) thing.
Building a balanced squad is a huge part of the DoF role. It's inevitable that some players will be viewed as donkeys if they've got that much competition, there's just no way they'll get the minutes to prove otherwise.