For me, if there is at least gold among the pile of crap them I'll try to upload it (assuming it's not terrible or not a banned artist).
Quality is still subjective though.
Posted under General
In my opinion it should always be taken on a case-by-case basis.
Imagine an A+ artist that has every work back to their very first doodle available to see online. Right now they're an A+ artist, guaranteeing approval on any upload. As you go back in their history, you'll see their quality slowly degrade--everyone improves with time and practice, after all. Eventually you'll reach a point where the artist is now a B artist. Then C, then D. You'll see fewer and fewer works worth posting until there are none.
Now realize that a huge majority of artists are at those B, C and D stages, where not everything is great and each work requires discretion at varying levels.
At most, the overall quality of an artist affects how many and which people are watching that artist for new works.
Updated
ano0maly said:
After reading the post upload guidelines, I'm just wondering if the overall quality of that artist affects the uploads, or it's just per each art piece.
Howto:upload mentions nothing of what you're thinking about. Each and every image is judged solely on this image itself.
Well, judging images as if you'd never seen anything else drawn by the artist or any other is the ideology. In reality, it's all subjective judgement that gets influenced by everything and anything, but still.
Sidenote: should that wiki page be updated to link to the disclaimer:english in the note to artists?
Post the 1 good one. First of all, you're supposed to do the quality control yourself, not assume that the mod queue is your tool to sift through the crap. If you know the 19 are bad, why'd you bother uploading it in the first place?
Second of all, although I won't reject a picture just because you uploaded a bad one along with it, it's a different matter if you upload 19 (or 29) bad ones too: upon seeing a page of consistently bad posts, I'm less inclined to spend my time scanning the details to pick out that one hidden gem. I will probably assume they all suck and aren't worth my time and move on. Reviewing images takes time.
And lastly, I do actually check the artist's other works when making borderline calls: I won't accept a clearly bad piece from a good artist, and I won't reject a clearly good piece from a bad one, but oftentimes there are images where I need to check whether the artist is clueful to decide if the post is good. This mostly goes for parodies, as those can be deliberately bad, and the intent does matter.