The White House doesn't owe you shit.
They set up this petition system to expand the illusion that somehow the system is working for its constituents. It is not, and it was not designed to. The system makes decisions so you don't have to. It's better this way.
The fact of the matter is that these prosecutors were doing their job, which is to apply as much pressure as needed to achieve a negotiated prison term (a win), and they did it a little too well for our comfort. The White House will not speak against these actions because these actions benefit the White House in the vast majority of cases.
If you want things to change, change the system. Lobby against the CFAA. Lobby for rules to enforce ethical use of prosecutorial discretion. Protest. Volunteer for candidates that oppose these practices. Don't think that clicking a "Like" button is going to change anything, because if the White House petition system actually changed anything, it wouldn't exist.
If you want to change the system, don't ask the system to change. Change it yourself.