We've already established the your brief experience predated functional Skill Challenges, even the first round of updates they got.4e had a lot in the little experience I had. Just not in combat. Reading the DM was great for skill challenges though.
So that's plausible. But not a representative fraction of even 4e's relatively short history.
I assume you had more significant experience of 3e? Gaming the DM was also less of an issue then - system mastery being the main thing - though if you could get the DM to allow in the right supplements for your build, that'd be worth it.