Yes, that is true. The interviews won't be particularly technical (although I wouldn't be surprised if they asked for a basic rundown on a jet engine or lift etc). But on the whole the questions asked will be in line with the candidates' experience levels. And considering candidates with zero flying experience can apply, they won't expect you to know a huge amount of technical stuff.
The interviews are competency based interviews. That means they will ask you questions regarding times in your life when you faced x, y, z. Now they're not asking you that just because they want to hear a nice wee story. They want to know how you handled the situation, what you did, how you learned from it etc. There's a tonne of reading you can do via Google etc on this type of interview.
