Largely because those people have utterly failed to solve a problem that's existed for 20-odd years (each change makes it worse in some way, as someone who's used the station at least weekly, sometimes daily, over the last 25 years or so) and needed a kick to actually do so, despite some of the solutions being obvious?
My first experience of Euston will have been mid to late 1990s (so post-privatisation, but pre Pendolinos and VHF timetable). I absolutely recall it being the exact same procedure as today - hang around in the middle and wait for the train to be announced before running to try to get a seat. I haven't known anything else.
Which is why I am not impressed by the idea "the grown-ups" now apparently being in charge and turning an advertising screen off means the problem is solved.
Indeed Louise Hague herself said that solving the problem "includes a shutdown of the advertising boards from today to review their use...these immediate steps will help to alleviate some of the issues the station has been facing.”
Yet whilst social media has now congratulated the government on solving Euston and moved on to Young Persons' Railcard minimum ticket prices, has anything been made better?
And if they do what the vocal minority want, and simply revert the station to 18 months ago with departures shown on the wall-board, why is that an improvement (when the ORR specifically found the situation at Euston before moving the departure boards required immediate action)?