I am not going to comment on the ethics of making a post about powering down. I think everyone on a decentralized platform should be able to write whatever content they want but i also believe that other users of that platform are free to upvote/downvote that content based on their personal believes. I personally am also doing a full power down for the same reason but i have more confidence in SPinvest and trust is not an issue for me as i hold the keys.

A run on SPinvest with everyone wanting out has already thought about. It's in the terms and conditions, a full winding down would require 13 weeks.

If say, for example, a third of token holders wanted to sell. This would require a power down and take around 4 weeks based on a third of 13. They would receive the 95% buyback and real token value for remaining tokens would increase. It would not be messy at all.