I don't think they're really limiting. Yes, as a newer player, you may think, "wow, I can't possibly do better than that", but that will be especially demoralizing if his strategy doesn't work out for you.
Strategies are ultimately very personal things, and as you get more experienced, you will find that you rarely just emulate a full strategy as you read it here, but you take from it what works well for you, and you add things not mentioned, and you hopefully come up with something that works as well for your style as the posted strategy works for the poster.
Ultimately, much of the game comes down to improvisation and creativity within the moment anyways. The faster you learn more tricks, and more techniques, the better you will do in any particular game that you join.