People would find tips regardless if they rly wanted to. There are sources other than the Internet.
BUT I guess banning them might reduce the volume of people who might be severely influenced by finding the websites- As in they stumbled upon them by mistake or had mild eating issues- I guess this would be another way of reducing that.
I have no clever responses rn but I would go with yes. The pro websites definitely do more harm than good so eliminating them or making more difficult to access has to be good.