I've heard of this inconvenience before. Many users complained about the security measures some distros employ as a nuisance and having to enter a passphrase AGAIN for a VPN, well that's just ludicrous.
Some users have taken action against these ridiculous security measures by:
1- Leaving the machine open and running, never shutting it down even in a wi-fi hotspot coffee shot
2- Having a close friend or random person enter the passphrase for them
3- Run a bash script from the fine folks at Hackers-R-us, they promise not to wannacry your machine
4- Some users suggest using a 'free' VPN because they don't use security at all which really does help keep carpo-tunnel at bay from typing passphrases in all day long
5- The best solution obviously, is to not use a Distro or VPN that needs a passphrase in the first place
**These are just jokes - don't sacrifice security for convenience**