Of course I would say that. However, some of the othe advice is not bad either.
Choose the instructor carefully. I have not heard bad things about GUE instructors, but they are human as well. If you can do a class with Andrew Georgitsis, he will really teach you something, I promise. He travels all over, so you may well be able to do this.
Let me give you an example of how thorough the instruction is.
We were doing a dive and were practicing a situation where a diver has lost his mask. (we didn't know that was what we were going to practice, btw, it was sprung on us). Anyway, I was the diver in question, and I was flailing around a bit. One of my buddies, realized my problem, and grabbed my arm to lead me along the line to get back. However, he was being nice. Time was ticking, and we weren't making much progress. Then Andrew showed us how it's done. He grabbed my arm, nearly dislocationg my shoulder (slight exaggeration) and shoved me in the direction of the "exit" (we were just following a line in open water). I was moving even when I wasn't kicking. There was no doubt as to the direction of travel, nor as to who was in charge.
The lesson, in this case, was that when you take charge of a diver who is somehow debilitated, you don't do it with kids gloves. You take charge in a serious manner and should be forceful enough about it so that there is no question. If you want to have a discussion, as Andrew would say, you can do so that evening over Pizza, when everyone is alive.
I have a couple other items I should mention about progression to deco..
Yes, lots of diving is mandatory. All your basic skills should be 100%. Gas sharing, hovering at any depth, getting to your valves, etc. etc. In a GUE - F class you will find out what you need to work on, and you can practice those skills for the Tech 1 class.
Whatever you do, don't let anyone talk you into any kind of Deep Air, Extended Range, or any other nonsense where they have you breathe air at depth to "see how you handle it". You wouldn't take driving instruction from someone who said "You'll eventually have a drink and drive, so let's get plastered and take this baby on the highway, I want to see how you handle it."
Air is good for you car's tires, and that's about it.