I hope that isn't the impression I've given. If so then I need to clarify that it wasn't my intention.
I think, it’s the turning from your personal likes and dislikes to more generic statements about the meaning of photography where your opinions are casting a much wider net that prompted my response.
e.g. "No longer landscape photography in any meaningful sense" "left photography behind" "neutering the medium"
Far from neutering the medium, I think that the power of digital cameras and modern software has liberated landscape photography by giving photographers the tools to produce more meaningful landscape images that better capture the way they feel about a landscape than was ever possible in the film days.
Far from leaving photography behind, I think the combination of modern cameras and modern software opens up massive opportunities to take photography further than photographers of old could have dreamed of.
Ansel Adams, who was involved with Kodak developing the earliest forms of digital imaging, was excited about how digital imaging would open up new opportunities, and expressed his regrets about not going to be around to take advantage of them.
Software making things easy, can have at least two effects, one effect is to make people lazy and accept whatever shock and awe effect the software gives them, and the second, for photographers willing to really learn the software, is to allow them to make photographs that would be either extremely difficult, or impossible without that particular piece of software.
I don't enjoy highly saturated, super sharp landscapes either, but maybe its' a phase that some people need to go through, the good photographers will eventually find their own voice, by either changing their style or moving onto subject matter that suits a super saturated style. Several well respected landscape photographers have commented on how they now look back at their 500px or HDR days with horror.
Overall, I think think the more people explore what they can do with photography, and the more that people push their camera and software capabilities to the limit, the more interesting photography is likely to become, even if I personally might like all of it.