Single post in Adopt a shelter Pokemon from its profile page

Let's say Sei has a Shiny Rockruff in her party and says to the chat, "I'm going to be releasing this, good luck to whoever finds it." I go to its summary page, wait for her to say she released it, hit refresh, andddd suddenly there goes all the fun in finding it. Not to mention the multiple other ways this could be exploited. Sorry, it just isn't plausible. :/