This is the first time I heard that we need author's consent to quote their post and/or to mention them. I'll be damned. I've mentioned a lot of users and quote their posts, almost all of them are done without prior asking if they're OK with my action.
We don't need to have someone's consent to quote their posts but when quoting someone's post could create drama then it's better to avoid quoting their posts or at least ask them before doing that.
I don't agree; this is just pushing the snowflake culture.
If you post something on a public forum, you have no control or ownership of your words.