He will remain on telly as long as the advertisers pay for commercials throughout the shows he is on.
The advertisers will continue to pay for their commecials whilever the shows gets good ratings.
So, the only way his or Holly's crown will slip is if the viewers stop viewing.
Whatever happened with Mathew McGreevy, it's looking like he chose a massive payout to remain silent over a smaller payout to tell the story of his relationship. So if there was illegal grooming he is as guilty of a cover up as anyone else.
If he was groomed and has suffered with coping/mental health issues etc as a result, then at least now he will be able to afford therapy/counselling.
If there was grooming, then whoever has the proof should bring that proof to the relevant authorities.
And if Mrs Schofield and the girls are alright with the life they have been living - then we should be alright with it too.
If we aren't alright with it, then all we can do is stop watching his shows. Then our combined avoidance/boycot will - eventually - lead to a change of Presenter because the current one is no longer bringing in the money.
The key is always the money.
When the viewers have grown bored of the celebs, the celebs will be let go and replaced by someone else who will bring in the viewers.