That is true but also a bit unfair, they've also been oddly preoccupied with topics like trying to help the most people and frequently promote giving money to efficient charities to fight against malaria, vitamin A deficiencies and help vaccinate children in very poor countries.
That's their marketing pitch, but revealed preferences are stronger signals than stated ones.
I agree that revealed preferences are stronger signals than stated ones. https://funds.effectivealtruism.org/ shows 52000 donors for $110M, https://www.givingwhatwecan.org/ says more than 10000 donors and more than $490M given.