1. I love using Discord and building communities there. But it does take a lot of work. A way to monetize some of this stuff is very welcome. Even if I won't end up doing this for my own projects, I like that there's an incentive for people to put a lot of effort into building high quality communities (which I'd be happy to pay to participate in).
2. If this works well, Discord will finally have a good monetization model. Many social networks start out awesome and useful, but then go downhill when it's time to start making money and extracting value from users (think Medium, Quora, etc). Discord is one of the most useful and fun tools I use day to day (both for my work and for my hobbies), and it was kind of concerning that I didn't see a way for them to make money. If they have a way to make profit without turning into an ad-riddled user-hostile dark-pattern-filled mess, it'll be great for everyone.