unitycoder
commented
3 months ago well nevermind, unity support contacted and they will later give some info/tips for doing the installs myself (without assistant, which is most likely getting removed in future).
hopefully there will be some survey or dedicated thread, but feel free to comment here: https://forum.unity.com/threads/no-more-web-installers-unitydownloadassistant.1602420/#post-9884850
personally i always install with the download assistant, since it doesn't require full editor installer download.. (and of course unitylauncherpro uses it heavily, to download or install editors)