You have to remember that every match is somebody's first ever game.
There will be young lads and lasses seriously excited about going to see all the players they watch on TV, and parents and grandparents looking forward to that aspect of the day more than the match itself, after last night's result.
Also, if you play all the kids (actually, you may not have been the one to suggest this?) , that gives the PL genuine reason to accuse the club of disrespect. Mid-table teams could have done this for the last month - what a shambles that would have been.
A matter of integrity, I think.