I think another angle to look at the gifting should be with the satisfaction to make someone happy.
I think it might also be tied to the desire to make the receiving enjoying it or having pleasure (sexually speaking).
And I see the online sharing, sharing in private as part of the acknowledgement and display of happiness/pleasure. Even it might have been shared in person/privately. The joy to see it still has (ever)lasting effect amplifies the sentiment.
The only caveat to that is that if no recognition, acknowledgement or visible happiness is seen then the gifters might have negative feelings towards his own gesture.
The problem with platforms like Throne is that sometimes it doesn't show you who the gifter was, and I feel uncomfortable personally sharing that I received something on my wishlist rather than in person... I don't know if that makes sense. I don't receive gifts online that often, but usually the person messages me to tell me they sent something, and I appreciate it in those cases.
Sometimes I also don't receive what was sent, too.. and I end up finding out months later that somebody tried to send something that wasn't available anymore. It's really weird and not super user friendly.
I'm always super grateful when I get even get a little something, or even just a thoughtful gesture. Someone earlier gave me the donation in a fabric envelope that smelled very good. That in itself made me happy, I noticed it later.
But I think, and that has been mentioned many times, that sometimes people offer things because they have ulterior motives. It's not because somebody gives gifts and tips that they are good clients... Obviously that's not your case, but that type of experience could lead to feeling wary.
Even when it comes to long dates, dinners and outings.. sometimes it's not because somebody books those that they are better clients or that we enjoy their presence more.