In all fairness, it takes the charm away quite a bit. I went to Feyenoord-Ajax around 2004 being a 13 year old child with my father and shit was just outright dangerous at the time. Police on horseback, trains full of Ajax fans being attacked, helicopters everywhere, felt like a battlefield. Ever since the away travel ban the number of accidents in and around the stadium have been zero to none, but they still find ways to ruin the game like last Sunday (or in March at de Kuip). Some outrageous examples: in 2004, Robin van Persie was attacked by a mob of Ajax fans when he was playing in Feyenoords second team (because he was recovering from an injury), he escaped because both Feyenoord and Ajax players and staff rescued him. In 2019, the parents of a youth team at Feyenoord got attacked by Ajax ultras because they were cheering a goal of their young kids.
It ruins the beautiful game to extents that luckily don't ever happen anymore in the UK and are a reminiscent of the 90s and 80s hooligan culture.