Who cares about those comments. What I've used on my old project is pretty much what I've used on new ones. Laravel Cashier is an abstraction on top of Stripe and that abstraction has not changed much (if any).
I do not have my own, but companies I work/worked for which are under NDA. Why are you looking so much upfront? Have you even tried it? It is almost super easy. Documentation is great. Not sure what you are missing that makes you so reluctant to try.
Event guys that we follow and listen to (Jeffrey Way, Adam Wathan, and others) said that jobs which they did not have required skills for made them learn most.
@connecteev One of the first projects that I did that needed Laravel + Stripe functionality was easy enough to integrate with Cashier. The documentation for Cashier is clear and concise -- I remember giving it a good read and going back to it for the duration of the project. In the end, I understood what I needed to do from the documentation and of course, with the help of the videos referenced by @bugsysha. The project that I'm referring to is only about a year old -- yes the videos are rather outdated, but they still contain information that will help you figure out what you need to do. https://laravel.com/docs/7.x/billing
Cashier is a good stepping stone, but of course, the Stripe API documentation is excellent and I now do my Laravel + Stripe integrations on my own without using Cashier.