Ethereum certainly will not go to dust l, at least, not at once. It faces more competition than ever and has run into scaling issues (tax/s limits, blockchain bloat) but software can be changed. The role of Ethereum is not over yet. The markets will decide at what level decent buy support reappears. Taking this from Bitcoin experience, the most bearish prediction for the final bottom is not lower than 80-95% of ATH. That's in is a very negative scenario taking a year or more.