Edit: Seems like this criticism doesn't apply to this project. I think that's good. What I wrote below is just an explanation of why someone might view crypto as a red flag in a charity project.

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I think the basic idea is that this web3 crypto stuff is pretty scammy. It would be like finding out the not-for-profit you were thinking about working with also sells timeshares - maybe it is, against all odds, legit, but still not a good look and kind of a red flag.

Another take on it is - if I want to volunteer at a place I don't expect to get paid. If I'm working for payment, I don't want my payment to be in NFTs. So, the web3 intrusion into this idea is unnecessary and doesn't fit for either volunteers or employees.