How is Wordpress 'terrible'? I can launch a full-functional website and manage all of the users and even have a shopping cart with checkout for under $200. Pr

How is Wordpress 'terrible'? I can launch a full-functional website and manage all of the users and even have a shopping cart with checkout for under $200. Pretty much everything I ever want to add onto to it (SEO, optimization, etc) has already been written in the form of a plugin and is usually free. I will admit, the internal code leaves a lot to be desired, but in terms of the ecosystem, I haven't found anything better.