My mind isn't blown, this doesn't seem to work properly across all applications.

I just tested it now pasting some text from a website into Slack and it retained hyperlinks (I don't mean plaintext https:// ones, but <a href='..> ones) and all that junk. When you cleanse it through notepad you have a guarantee that none of that is left.

I thought the Ctrl+Shit+V paste trick worked in Outlook, but I'll be damned if I could make it work today...