(mostly illegal sports streaming sites)
This doesn't accomplish what the legislature intends. It never does. For instance, in the US, Texas in all their wisdom that can't keep an electrical grid running smooth without duct tape and bailing wire, has decided to 'ban' PornHub. It makes all the christofascist's dicks hard because in their mind, they have rooted out evil and destroyed it. (See Satanic Panic in the 80s) However, their weak, little minds cannot comprehend the fact that for every technology, there exists an equal, yet undoing technology.
Do it for the children I hear them say, and I would agree in this example, that children should not be viewing porn. A better solution would be to make parents actually parent. You brought a service into your home that can be both highly detrimental and highly beneficial, and then you turn around give it all, including a cel phone, to a very inquisitive mind uninhibited, unmonitored, and uncontrolled in any manner. You're the problem, not porn.
/end soapbox