Wear your flag, post-editor.
Quality control isn't really as much of an issue on /sp/ as it is on the main board since it was basically created for people to shitpost on, it's also not as big a deal if threads are taking up space in the catalog or bumping other threads off since all the threads are intended to be lighthearted and stupid anyway.
That said I do kind of think the "Hi anon" posts are getting a little out of control. I like the meme but I counted and literally 37% of the catalog is some variant of "Hi Anon" at this point. Some of the them are clever and generate actual conversations, like the fruit bat one or the Milo Highliss one. However mostly they're just one-shot junk threads that don't get replied to with anything worth reading. These threads are maybe a step or two above "Tenshi eating a corndog."
I really don't want to make any more rules on /sp/ than we need to have. The board was created to be something fun in the spirit of old /b/, so in that spirit we try to allow users to post more or less whatever they want as long as it isn't illegal or against global site rules. However old /b/ was also a place that generated a lot of content and creativity and there's really very little of either in posting variants of the same image over and over with virtually the same caption.
I'm not going to tell the literally two anons who keep posting all the "Hi Anon" threads to stop, nor do I think it's necessary to start deleting threads at this point. However I am going to suggest that they cool it on posting so many of these. If the board is nothing but the same meme posted over and over people are going to stop using it and it's going to turn into 4/qa/ or endchan/sp/, which I don't think any of us want.
Anyway, tl;dr, the "Hi Anon" meme is technically on topic for the site and appropriate for /sp/, but please consider posting less of it out of consideration for your fellow anons, who may not find it as funny as you do.
Okay… I'll at least tone it down a bit, until the OC pics get made.
Thank you, we appreciate you understanding. I'll probably make a short post on /sp/ about it as well.