Nowadays, signature campaign seems to change their approach. Well, I think it's actually the hard work of their campaign managers who hand-picked these people. They no longer aim to build a brand awareness through repetition. But rather, they try to establish trust by having reputable members to wear their signature, knowing that those reputable members will not stand still if there is an issue with the casino. Not in the sense that they'll blindly defend the casino, no; Quite the opposite, they'll take action.
As such, as long as those reputable member "wear" the casino, it can be safe to assume the casino is trustworthy, and ultimately, they get a boost of reputation.
You are also right but I want to say this word like this sometimes we the campaign managers have face difficulty in hiring reputable members because in most cases it can be seen that signature spaces of reputable members are not available for hire, they are pre-hired. Although currently, I see many reputable members have empty signature spaces and there is a also big issue that is the budget in case of low budget obviously we can't attract the reputable members. However, in the case of professional managers, it is not difficult to pick or recognize a reputable one, because many of us use tools and experience.
Anyway, as I'm seeing that sportbet.one is still safe at online gambling and I thing this was also a good time to boost their awareness by some promotion.