Most people I know have deactivated their account. I just use messenger.
By deleting completely and going to alternatives, that's how we tell them it's not ok.
Got a backup being generated right now by Facebook of all my data, and will be permanently deleting it after that.
There are so many app alternatives out there (that are as well built technically) that you don’t need to rely on anything from Facebook's ecosystem anymore. Give it a try, no disappointments