No, those are the rules in the UK now
At the moment you can’t advertise gambling in the UK with any kind of enticement. So you can run an advert that says “Our casinos is at http://www.ourcasino.com” but you can’t say “Win money at ourcasino!” or anything else that might encourage people to come.
In a year’s time the new gambling bill will come into force and the above will change. The message you’re quoting was put out by the UK government to clarifiy the current position until the law changes.