the majority of my time will have been spent doing the "art" and "Writing" by way of visuals.
I can tell you more – when I've finally started making basic drafts for my project I realized that I cannot separate "writing" from "artwork" anymore because my story relies heavily on precise visuals (to be more specific, one of the core aspects of my story is an accurate depiction of combat scenes) so I do story-making and visuals simultaneously with both aspects influencing each other. All in all, I feel that making a comic is practically no different from making a cartoon (or, to a certain extent, a computer game), the only major difference is that you don't have to animate transitions between keyframes but other than that it feels pretty much the same for me.
My point here is that most of times it's very difficult to separate the pipeline into clear "writing" and "artwork" stages so telling that "writer always does less work than artist" is simply wrong.
I find it really hard to imagine a scenario where the writer has put in more consistent effort/work than the artist has by the end of the project, and even harder to imagine a scenario where the artist has done NO "writing" throughout the project.
Well, in my previous personal project I hired an artist and we agreed that he will curate the graphics including thumbnails and paneling while I will focus on plotting and logic, at the end I was practically forced to draft the whole goddamn comic myself so the only work my artist was left to do is to trace, I repeat – trace my drafts into final graphics and even then I had to help him with placing patterns on things in perspective as well as some other things despite all previous agreements. It doesn't really matter how it all ended but the fact is – I did most of the difficult graphical work despite the fact that I'm not an artist and I was not supposed to be doing any of it so here is the literal example for you.
Also, it has been pointed out, it's very rare for an artist to "need" a writer, because usually an artist worth their salt would have developed storytelling skills at the same time as their artistic skills.
To be perfectly frank, right now I would use some writing help with logic, progression of events and dialogs because fiddling with everything at once is excruciatingly hard and I'm sure that many artists would only benefit from offloading some of their story-making to someone else which is the actual point of that whole topic. Sometimes when the sheer amount of work is huge, skill alone is not enough so yes, this is actually a 100% relevant.