It's not as bad as the European Super League suggestion, or wanting to have the World Cup every two years, but it still adds to the fixture congestion.
I've often wondered if it's time to scrap the League Cup, since it seems to be something like the FA Cup Lite (92 teams in the League Cup, over 700 in the FA Cup). But I've read that, because it's organized by the EFL rather than the FA, the League Cup helps to give the EFL a little bit more power to balance out that of the FA. The other thing is, it gives the smaller teams another opportunity to make some extra money by getting additional chances to play against teams from the tiers above.