for you it sounds great but for someone like me I like to understand how things work under the hood. Yeah I made a blog in 15 minutes using Ruby and Rails but how did that happened under the hood? I like to fully understand things not just be told how to do it.
I guess that's why PHP being embedded in HTML allows me to see the bigger picture.
First, from what I understand, Rails has a lot of "magic". So on that note, you're probably just not going to like Rails or Rails-like frameworks in general (like Django, lots of magic). PHP or even something like Flask might be better for you. Different people like different levels of abstraction, and believe it or not you can write web pages in C. PHP was originally designed as an abstraction over C, to add a little "magic" so you didn't need to know how things worked under the hood in order to get a web page running. These days, Rails is the new magic, and PHP is the new "under the hood".
Secondly, the course does go into more detail later on (I'm on #20 of the "build a saas app" right now), where after every video that you write code, there's a video that explains why you did that and what it does to the program. It actually goes into more detail than I was expecting for a tutorial that starts off with "here's how to install Google Chrome".
I guess that's why PHP being embedded in HTML allows me to see the bigger picture.