Thoughts
Like I don't know what Hank Green was doing in 2015, but it wasn't this
=> https://good.store/
And I guess he was doing similar things, and I either didn't know about them or didn't care or dismissed him as looking for attention. It's easy to look at, Mr. Beast, for example, or a youtuber or influencer who's just gotten popular and starts promoting a charity or advertising their charitable donations as them just trying to continue and expand their publicity. Of course these types of people are donating in public because they're people who love attention and they think donating will get them more attention.
But because of where Hank and John are, relative to what else is being done on Youtube and what they've done in the past, it looks more genuine to me today. They're not trying to make themselves look good to people that don't know them; they have an established audience. And they've decided to direct that audience to charitable giving rather than towards "hank and john" NFTs.