Sure VPNs aren't perfect. Nothing is. It's layers. Defense in depth. Of course the users don't like having to connect to VPN to read their email. Pick your poison.
The consumer VPN market looks like a snake pit of spyware and shadiness. The tin says “Hide yourself and your data” and there have been reports that some companies are doing the exact opposite: funneling it to shady actors across the world. And this is not even a freemium product in many cases!
I’d assume the enterprise segment is not as bad, but I’d also assume GP is talking about something along these lines - that you can’t trust vendors for anything these days.