The real issue is allowing that stadium in the PL in the first place.
agreed. As teams move from lower non-leagues and eventually into the EFL there are minimum criteria they have to meet re their grounds, that should also apply to clubs when going into the Premier League.
The 10% minimum of tickets going to away teams is fine when it amounts to e.g. 2500/3000 which it does in many cases but when a ground has such a small capacity and the club, e.g. Bournemouth seem to make no effort to increase it, they should be made to give a minimum actual value, e.g. 2000. That would then force them to do something about the capacity