So, I'm just gonna post my thoughts on Core membership and similar features on other websites.
Stuff like Core memberships are like a double-edged sword. On one hand, you have the additional features and options that these special memberships offer, like better page customization, exclusive deals, and the holy ad-free experience. Plus, having these kinds of memberships can make you seem pretty dang cool (not guarunteed obviously).
But on the other hand, you usually have to pay regularly in order to keep these memberships. Another negative aspect though is the risk of letting the "power" go to your head.
YES, these special memberships can easily become TOXIC, not only to the person with the membership, but also to other people. Some people might suddenly start abandoning their friends and followers because they think they are "no longer good enough" or "just gonna make them look bad". Others might start mistreating people who don't have the special membership because they suddenly feel allowed to.
Now, I would like to remind you that I said these special memberships CAN easily become toxic. CAN, not WILL. And it depends on the individual person. There are still plenty of people who can just as easily have these special memberships WITHOUT letting it go to their heads. (And then you have people like me who just avoid having the special memberships altogether.)
In short, special memberships such as Core are like almost anything else: its ok to have it, just please use it responsibly. Don't let it go to your head. It is NOT a permission slip to be rude.