Many Mullvad customers migrated from there to Mullvad in the first place after Kape Tech bought them.

Kape Tech , at the time, had a less than stellar reputation. I haven't followed it much since that time.

Private Internet Access stopped releasing source code for recent versions of its clients.

Details: https://news.ycombinator.com/item?id=35642700

These days, free and open source software clients are table stakes for a VPN to be considered trustworthy. The fact that PIA silently stopped releasing source code after previously promising to do so is a major red flag.

You don't need to use their client. Just grab a config and use an OpenVPN or WireGuard client instead.

PIA official repo: https://github.com/pia-foss/manual-connections

https://helpdesk.privateinternetaccess.com/guides/linux/linu...