I pretty much agree with the first part. It is a lot different with people you know and with items that you know it is for (even though it can be used for other things, you have an inherent trust in the person).
The second part I feel just gets into semantics about payment method, though. I agree that it is unfair to compare the straight setting up of a gofundme and a tip jar. If you tweak it a little im curious if you think it is still okay? For example:
If i had a donate button on my blog that took them to a gofundme instead of a paypal.me link and it happened to be for a snake, would that be acceptable?