OPNsensePIAWireguard Script Safe?

[guyp2k]

Curious if anyone has implemented the following:

https://github.com/FingerlessGlov3s/OPNsensePIAWireguard

I wanted to make sure that it is safe and nothing to be concerned with. I have implemented in OPNSENSE and no issues, looked at script (looks fine to me) however, given my limited knowledge thought I would aske here for feedbck.

Thanks