You just don't how it's done, I have seen it done numerous times. It's all about how you communication your problem, nothing more.
This in fact is false just like the scammers FYI that skrill transactions can be reversed.
This is what happens when you try to reverse a skrill transaction from first hand experience:
Thank you for contacting the Skrill Help Team.
After careful consideration of your request, we would like to confirm that, unfortunately, we will be unable to further assist you with a refund of the transaction in question, taking into consideration the fact that essentially you have processed a regular send money transaction, considered final and irreversible. Furthermore, our Terms and Conditions, that you have accepted when opening an account with Skrill Limited, clearly state that:
"9. Sending Payments
[ ... ]
9.4. [ ... ] Once funds are credited to the recipient's Skrill Account, the transaction becomes irreversible.
[ ... ]
16. Liability
[ ... ]
16.8. Our obligation under these Terms of Use is limited to providing you with an electronic money account and related payment services and does not make any statement in relation to or endorsement of the quality, safety or legality of any goods or services provided by a Skrill customer."
We would like to assure you that we have taken the appropriate actions to investigate this case further, but unfortunately we cannot disclose any information about the recipient's account due to our privacy policy. In case you decide to undertake an official legal proceeding against the respective individual, Skrill will be able to provide all relative details to the respective authorities so that we can support their investigation.