You can ignore tags.
Hover over to the tag and click "🚫 Ignore Tag".
Find "Ignored Tags" window on the right side of the homepage, click on edit and select Hide questions in your ignored tags.
Alternatively: You can always add tags to the ignored tags list.
If you want to transfer the ownership of the post from yourself to the community, you can simply make your post Community Wiki post.
From What are "Community Wiki" posts?:
Community Wiki posts work by partly transferring ownership of the post from the original author to the community. They make the post easier to edit and maintain by a wider group ...
When you contribute a post on a Stack Exchange site, you grant the company a license to use your content. Under that license, you have a right to have that content disassociated from your identity, so the answer to your question legally has to be yes.
In fact this important question is addressed in this post on Meta Stack Exchange as an FAQ item.