Have you considered AlgoVPN [0], I've not used it personally but heard positive reviews from those who have. They claim to be "set of Ansible scripts that simplify the setup of a personal WireGuard".
I'm not fully sure to what extent Juspay is used but one feature they use heavily is autofilling OTPs. Unlike the US, to make a card payment online according to RBI's guidelines, you need to enter a one time password that in most cases is sent to you over SMS.
What Juspay does is, it scans your SMSes and pastes the OTP automatically into the payment page. All the user has to do is click an approve button, streamlining the process as the user never has to exit the app.
This is likely, I'd say it's due to the 90–9–1 rule[0] which states that the vast majority of your users would be lurkers, a small proportion would participate in discussions and the smallest number being the power users who generate most of the content on the platform