The Wizard will be an internet wizard of course.
The Trapster will be part of the FBI posing as another chatroom user to entrap posters who are distributing illegal software.
To break up the levity for a second, they could have made this hacker angle work with a B-list FF villain.
I mean really, how iconic are Wizard or Red Ghost anyway? I think you could have made them into hackers and barely anyone would blink an eye. Heck, Mad Thinker does seem to do a lot of hacking already, he was setting up dummy e-mail accounts back in the 90s, making him a hacker would be really easy.
This just doesn't suit Doom, I am sure Doom has some hacking skills, but that would be the least of his talents. This trying to turn Doom into something he is not, like the 2005 movie did.
Doom should an epic foe and hackers are not epic. Doom being a dictator is not dated, considering how often we see dictators in the news. Doom is the FF's most iconic, if they want to change a villain to fit this story, do it with one of the B-list villains and have Doom waiting in the wings.
Doom being a hacker is not iconic or epic, Doom should not a guy who lives in a dorm room with a "Wrath of Khan"poster, who drinks mountain dew to stay awake is he can write his history essay and post a mean review of the FF on Yelp.