I belong to a few other forums that use the same format for their forums. It is a generic format which can be changed slightly depending on the wishes of those who run them but in effect, it is all the same.
Adverts appear on these forums too. On some, the adverts are based upon any recent searches I've made via Google, they appear in random places and there is nothing that can be done unless I subscribe to that forum. As an infrequent visitor to some I don't bother and accept the adverts.
Don't forget, the adverts help pay to the forum to stay open. Gold Members have the choice of whether they want to pay and therefore not see the adverts. If you choose not to contribute, why should the adverts be removed, if you don't pay to keep the forum running then unfortunately the adverts do, put up with them.