Considering this is straight from a VPN provider, take this with a boulder-sized grain of salt.
And I say that as someone who believes using a VPN is generally more beneficial than not. And espouses most of that advice regarding the VPN.
Even if a VPN were totally benevolent and gave daily tours of its office, there’s still no 100% guarantee their claims can be verified at all times. So there’s always an element of trust. (I trust most of the ones outside of the Eyes countries more than my home ISP, though. )