Gambling booths in stadiums need to go too, anything that kids are going to see. Football adverts in the windows of betting shops, ads on websites the whole lot.
One of the whole points of the Gambling Act 2005 is to protect children and vulnerable people from the effects of problem gambling and companies try to circumvent that. When I worked in gambling it was company policy to try to upsell as many casual football punters as possible onto the addictive machines (not fruit machines, fixed odds betting terminals are far more dangerous and insidious than that even with the recent higher stakes ban). Targeting young customers (18 years old and early twenties) was encouraged.
No matter what warnings are put into adverts, bookies won’t be blind to the fact that their adverts appeal to people too young to gamble and whether they admit it not making gambling alluring to them is an objective of their marketing.
It’s an absolute cancer in society. Legal gambling has to exist to prevent organised crime stepping into the breach but it needs to be heavily, heavily restricted.