Go ahead and count it as "abandoned" if you want. He did talk about building a Hyperloop and is not currently pursuing it directly. But I think failing to win required government approval/funding is a bit different than capriciously giving up on an idea, and The Boring Company itself is far from abandoned. Very different from the solar roof which is unambiguously a commercial failure.
TBC's continued existence isn't very relevant; the point was they/he have yet to build a lasting, full-scale hyperloop, despite his statement they would try. He stopped trying, and I'm fairly sure government approval is far from the only significant obstacle to making a functional and profitable hyperloop anyway.
I might even let go of the hyperloop concept, if they built something else of DC-NYC scale that beats the alternatives in a few measurements.