The 17 Bus Disagree, the stadium was designed for that to be used as an exit from the East, it was designed by experts in traffic flow and the like, and only since the safety gate has it been such a problem, originally the safety gate was for games where there was a high risk of clashes between fans, ps the away fans should have the South west section, and the club should have made that the bigger section., meaning that the home fans could have left past the away section much easier.
I have to disagree with your disagreement. The experts in traffic flow and the like who designed the stadium designed the pedestrian exit route from the East Stand to the A33 with these :
Take away that as a means of exit and all the people who would have gone down the steps would now go down Hurst Way - if allowed - but because there's no width restriction like that provided by the steps they go down in one single mass of people.