Earlier quoted context omitted.
What's even more ridiculous is that their homepage says: From startups to the Fortune 500, hundreds of thousands of developers *trust us*. Trust you to what? Pull the rug out at some point? Why they even put that word on the HP is a separate question.
The acquisition happened nearly 3 years ago. To their credit, they kept running it for longer than a lot of other companies would have. Anyone in the situation of seeing their platform provider acquired should see the writing on the wall. It's unfortunate, but it's the reality. Enjoy the continued services while [if] they last, but always have a Plan B.
In this case though FB seemed to embrace Parse and continued to develop it. It would have been much better to shut it down after acquisition. FB's support of it probably helped it gain more trust that it would stick around.