That is nonsense. Their intention isn’t to make the world easier, but to make it safer.
SSL Certrificates have always been a relatively complex topic, and they are definitely making it as easy as possible.
Unless you have someone who does all this for you, in that case you don’t need any knowledge at all, this is the next best way to use certificates.
And if you manage to automate it, which Let’s Encrypt allows you to do, unlike most of those other “cheap” certificates, then you’ll notice that it may well be the next great thing that happened to the internet, next to xmlhttprequest and websockets.
So please show some respect.