My biggest complaint with the Jetson line is it's all ARM. Look, I get it. But the developer experience is horrible. Building Docker containers for ARM devices is a pain. Hell, building anything for a Jetson can be a pain unless it's a pre-packaged NVIDIA thing - really not a fan of building things from source. Add on top of that NVIDIA's very low level documentation for pretty much any tooling they ship, coupled with the difficulty in getting near-time engineering support (unless you want to post to one of their message boards, and hope you get an answer back in less than a week)... basically, it's really rough to do anything seriously useful with Jetson hardware.
Second biggest complaint is deploying Jetsons in production environments. Dev kits aren't production stable, so you either need to build your own carrier board or find one pre-built, and frankly that's just a giant pain to do.
Third biggest complaint is having to flash Jetsons manually. Misery.
A production-ready x64 Jetson that you could order directly from NVIDIA would be my dream. Add up all of the shortcomings and overhead of ARM Jetsons and IMO you do not have a viable device for shipping AI solutions at scale.