It is also very damaging to communities when leading members power down.

Very correct sir. Communities are created by individuals but that shouldn't make them power down because members have also contributed alot to the growth of this Communities. Without members this Communities wouldn't have grown.

This shows how unethical this individual Maybe.

Carrying out this act will definitely devastate alot of Steemians because they will definitely be demotivated

Of course, it has to be remembered that people don't have to only post in communities. They can just post on their personal blogs.

Wow this will definitely motivate people not to lost hopes most especially during the period their community decides to power down. Hopefully, we pray this shouldn't be happening because posting in Communities will always leads to more interactions and engagement between Steemians hence making this noble platform a social and a lively place