You can order it, but apparently [0] they are deploying on the order of ~20 per week overall, so it's unclear if you'll ever get one. You're right though that it's not discontinued - sorry about that.
[0] https://electrek.co/2022/07/07/tesla-tsla-achieves-best-sola...
People are great at finding ulterior motives for people they've already decided they dislike. I don't think Musk is an altruist, and I'm certain he has multiple motives for the ventures he cares about, but I think it's hard to deny that he's found success where others have struggled, and that his ventures will ultimately benefit humanity.