I genuinely don't get what the issue is. If your fellows are donating more than 1kp, then the others won't be getting in the way and are doing no harm at all. They aren't taking advantage, they're just chancing their luck (and it sounds like they aren't lucky with your wonders so no problem!) It's not a disgrace - it's just part of the game. In Felyndral, we have Tony 1 - he pops up all over the place with his 1kp here and 1kp there, all over the map. Makes me smile - he's not in our fs, and I don't know him at all, but we have a chuckle about it - our Tony's been visiting again. Nobody gets annoyed about it, and he doesn't usually get a chest off us. But there's no harm in him trying.
Maybe it's just that I've seen this complaint too many times and it's wearing a little thin.
(Edited to remove 'female sign' which was supposed to be a shrug emoji. Note to self - stick with the in forum emojis)