Highly recommend watching the whole 3 hour thing by the way.
In particular the part where he discusses Owlboy and pixel art, something I am personally invested in and something that I would gladly rub in the face of anyone who claims that videogames or the internet have not created any worthwhile aesthetics.
(And one may claim that pixel art is just another form of pointilism or mosaic art but I personally don't think it's as similar as some people think, particularly because of how rigid it actually is.)
I'm not really all that familiar with the "tagger culture" that's discussed in this thread but I'm guessing pixel art and its community has many similarities. Most were gamers with little exposure to the art world. However, the approach to the art is basically the complete opposite. Pixel art is extremely laborious and pixel artists are notoriously strict about what methods should be used to achieve its creation. Photoshop, extra effects and filters, and all manner of other things are generally frowned upon and oftentimes straight up just not allowed on many pixel art communities. If you're a good pixel artist, you can work in MS Paint without issue. Most of them do not venture too deeply in to the art world and if they do they go in to the circles where traditional forms of art and methods of learning are discussed.
Pixel artists do experiment but it's in a much different way. Extreme emphasis is put on how even the smallest clusters of pixels interact with eachother and precise and careful use of colour is in general probably more important in this medium than any other. Pixel artists repurpose old antiquated game limitations and technical workarounds to create new pieces of art in a way that I think is really unique and interesting in its own right. It's an art form where the true emphasis is in complete control over the end product, down to every last pixel, and every last hue used.
Pixel artists don't mix colours on an easel or using some sort of colour mixer tool, they methodically adjust hue, contrast and saturation until they can find the perfect shade to use. Each shade is deliberately hand picked and serves a unique and important role in every piece. And sometimes, pixel artists will put a true limitation upon themselves- such as limiting their colours to something that could be displayed on antiquated pieces of hardware.
Take this piece for example:
This is not a piece where the glitchiness and blockiness is haphazard or random. The description for this piece is "c64, multicolor mode, meant to be viewed on a rotated monitor. The code on the side explains why these colors do not look like normal c64 colors."
The same deal applies to these pieces:
The image is not distorted randomly. Everything you see is a result of the artist following the limitations of c64 hardware limitations.
This whole concept gets pushed further and further by pixel artists all the time, who are trying to test themselves and see what they can accomplish with the bare minimum.
Take this piece for example:
4 colours. Red, Green, Blue and Black.
Or even these:
2 colours. ONLY two colours. Less than the Gameboy. Nothing inbetween. Locked to a grid, and usually done on a very tiny canvas. It is pretty damn close to the bare minimum of what an artist can work with in a visual sense.
Even with stuff that is clearly rooted in videogames and nostalgia, there's plenty of interesting ideas and visual themes going on.
Like this piece and its unique and honestly pretty gorgeous palette.
Pixel art is not a medium that's simply defined by its ties to videogames or its association with nostalgia. It is defined by its meticulousness and its approach to self-limitation, and the way that approach can conjure its own distinct aesthetic. It's an exercise in how the eye perceives shape and colour even on the smallest, most precise scale. Pixel artists don't just "draw" when they create art, what they really do is solve visual problems that have really precise answers. In my opinion it is the purest form of digital art that one can create.
I highly recommend that you try creating some pixel art for yourself. Not just any pixel art, but pixel art with a hard limitation. Try a 100x100 pixel or smaller canvas, and a limit of only 2 colours. See what you can create, see what solutions you can think of to solve the problems you'll encounter. There's something really great and unique to be experienced in the zen of pixel art.
There's a lot more that could be said about it but I'll finish the post here.