What do you mean you have not seen anyone ask for a temporary self exclusion?
There are so many websites who offer this in their system, you can usually choose different options like 1 month, 3 month, 6 months etc.
They do not have this which is why I had to contact them through livechat/email.

Casino's should always offer the accessibility to their users to be temporary blocked so that they can take a break if they want, this is completely normal.
Same goes for people who want to be permantely blocked.