We might have more room to explore these ideas in a different topic that deals more with concepts like "avante garde vs creative play" or "when can pushing boundaries be considered avante garde."
Many of the modern photographer's digital tools come from unexpected places, like NASA. I think that getting in touch with and learning about different photography methodologies, theory and tools (past, present and future) can enrich photography for someone interested in such. I do not think that there is a certain required and measurable knowledge of things such as photography history which can somehow serve as a hands-down prerequisite or credibility authentication for photography as an art. Further, I don't see avante-garde art as necessarily demanding specific items from artist such as how much is intentionally based in otherwise traditional foundational knowledge. Traditionally, the concept of avante-garde eludes definitive theory concerning topics just like these despite many best attempts.
Like many concepts in art, it may be easier to accurately say something like, "this is beautiful to me" or "I do not think this is avant-garde" than it can be to try to accurately describe an art as "this is definitely beautiful" or "this is definitely not avant-garde."
I think an important thing to think about is that art can be one of those things that can deepen in quality meaning and satisfaction for the artist with more effort and care, like a birdhouse built by a crafter. That can be a difference between art and craft, however, because unlike the crafters birdhouse, an artistic effort may be appreciated in stark contrast to the effort put in. I might base a year's work on rich history of oil paintings and passionate care, to which a passerby may assume took an evening. On the other hand, I might get an abstract piece into MoMA that I composed in thirty seconds by flicking a brush and no one would be the wiser.
Part of art is the artist's satisfaction of getting something out and part of art is what the artist desires that art to do after becoming alive and gaining the ability to change the world and other perspectives.
A big part of what avant-garde art can be involves social reform. In one example, consider a traditional photographer who submits a piece clearly steeped in rich art history with a subtle change in style working to push the boundary of photography. In a next example, consider a modern photographer with no apparent understanding of photography history and only fluency in digital image editing software but who's piece is circulated online and works to undermine and change broken social policy. I would be more prone to calling the modern photographer's piece avant-garde if I had to pick only one of the two, but would classify both as art.
That's just me, and I think that is a point. I think anyone can benefit from knowing when to step away from technology, but that decision may look different from person to person. For an educator, this may involve being in tune with when learners no longer benefit from technology as a tool for a given project or lesson or when learners need a break from technology. For an artist, this may mean a personal choice to step away from technology to return to basics and become learned and practiced in areas such as art history related to their medium. I do not think this is a choice that can be spelled out accurately for someone else, however.