Hi @sixstring,
Basically, people who are used to system administration and who have administrative access to their servers should use one of the dozens of command-line tools (like Certbot, which we develop), and those who aren't should choose a hosting provider that provides automated or integrated support for Let's Encrypt.
There are other options, like using a web-based client to generate the certificate in your browser, but they're dramatically less convenient because they won't support automated renewal.
If you're not the administrator of your web server, the level of integration and options to use Let's Encrypt are totally at the administrator's discretion and so it matters a lot who your hosting provider is.