I have no problem with crowdfunded donation services... so long as the person/project the donations are being collected for has consented to it.
I have a large problem with forcibly opting me and projects I work on into this, especially since some of those projects have donation mechanisms already, and an even bigger problem with no way to opt out once in. And I have a huge problem with the implication that I or those projects have any sort of relationship with tip4commit other than one of saying "please stop this" and getting back "no" over and over.
Unfortunately can't seem to access their site, but if you're right and they are intentionally creating confusion then that is obviously a bad thing.