I never said strikers couldnt be managers & be successful ones. I just said I feel like midfielders and defenders end up succeeding more these days when given a job due to their utilisation of tactics even when playing.
SAF is well known to be one of the best man management managers but is also tactical heavily influenced by his assistant manager. Hitzfield is another forward who was successful for Bayern. Mancini is another. Heyckness is another manager who is a forward and succesful. Cruyff was a forward but also an attacking midfielder.
Compare those to the ones we see more in the modern game and sligthly older who have played as a defender or midfielder to some degree -
Marco rose (defender), Klopp played as a striker first then RB, Pochettino (CB), Guardiola (midfielder), Zidane (Midfielder), tuchel (defender), Simeone (midfielder), allegri (midfielder), conte (midfielder), Ancelotti (midfielder), Mourinho (midfielder), Biesla (defender), del bosque ( midfielder), luis Enrique (midfielder & forward), Benitez (defender), sarri (CB), van gaal (midfielder), Capello (midfielder), Lippi (sweeper defender), ranieri (defender), deschamps (midfielder), emery (midfielder), low (AM), Pelligrini (CB), southgate (midfielder/CB), Arteta (Cm). I could go on but I cant be bothered.
Not everyone is a midfielder or defender but by picking random out they do tend to be in quantity in such positions more than a forward tends to be (even if the quality isnt the same).
It's just a random thing I've made up in my head. I for example wouldn't be surprised if Nicky Butt, Giggs or even Carrick become our manager one day because each one of them has that wonderful experience playing in the middle of the park. You aim to keep a tempo for your team, trying to focus down on the opposition attack as much as their defence to try create something from nothing, speaking to the players in front of you just as much as behind you etc. Those thoughts when playing football does increase the interest in being a manager.