Mmm. Youre doing two things: 1) youre moving state into an arbitrary untrusted easy to modify location. 2) youre allowing users to “deep link” into a page th

Mmm. Youre doing two things: 1) youre moving state into an arbitrary untrusted easy to modify location. 2) youre allowing users to “deep link” into a page that is deep inside some funnel that may or may not be valid, or even exist at some future point in time, forget skipping the messages/whatever further up. You probably dont want to do either of those two things.