That's definitely a sufficient understanding to make progress with. It doesn't describe every monad but it describes the ones you will commonly meet when progra

That's definitely a sufficient understanding to make progress with. It doesn't describe every monad but it describes the ones you will commonly meet when programming, and it provides enough understanding to scaffold further understanding of the more abstract concept. A lot of the "it's so hard" BS is from people who think you have to understand a concept in its full generality in one shot. That's definitely not how effective learning works in most cases.