I do agree to your overall point, and winning a Europa League trophy would be immense with t some really good teams in there and the prestige it brings.In the grand scheme I think consistency of league performance says more than a run in a cup. I think the win a cup any cup cadre are probably trying to shake off the easy banter but also possibly believe a cup win adds something to the mental of the players and the squad.
I'm not sure if I agree completely, I think it's a bit more dependent on the cup itself. Winning the EL is something else entirely to me than winning the CC and not because of the potential reward but the challenge, the adversity required and the quality of the opposition faced and obviously the prestige of winning a major competition in Europe.
But, there are challenges in the League cup too - you have to beat at least one, sometimes two of the big boys in the latter stages of that competition and in the semis/final they play a much more full strength team than in the earlier rounds. For me winning that would still be an accomplishment, I remember being at the Chelsea final we won and that was quite a battle and really felt like a hard earned cup win and it meant something so if we were to do that again I will not be downplaying it....