Earlier quoted context omitted.
An issue I have with imageboards is that use of images invites low-effort posting because it makes it easy to be as annoying as possible, whereas with pure text making inflammatory remarks at least takes some forethought, and it invites unique forms of creative writing. Anonymous textboards I think have the best forms of banter, but they're dying out these days. Over here people have incentives to appease others by g…
The low-effort posting (AKA shitposting) is part of what makes it great. It's kind of an acquired taste, but there's a certain humor to it.
A shitpost doesn't have to be low effort, rather I'd argue the greatest ones are often quite high effort, and invoke a sense of poetry and lucidity that makes you question what could've gone on inside the head of the person that made it. That style of shitposting was part of the culture of 4chan's now-defunct textboards, and even back then it was markedly different from (and for the most part ignored by) the rest of the site.
For what it's worth, copypastas are the highest (and likely the oldest) form of meme.