Automatically Spoiler-Text Another User

It would be cool if you had a check-box that you could right click and check on another user that when checked automatically made all their text conversation in spoiler blackout for you, sort of like mute for voice but for text.

Uses: user who regularly spoils things, user who has bad opinions but sometimes other people like responding to them so you may need to see context, user who posts images you don't want to accidentally have open at work or on stream.