I think you misunderstand. My post isn't about flower's, it's about his argument against "convoluted" aspects of the game. If you want a simplified game go play another of the dozens of RPG games. The thing that sets TES apart is the little aspects that they put into the game, and that includes something as simple as the realistic aspect of harvesting.
I mean if you remove the chance for failure at harvesting why not remove having to repair your armor and weapons, that just makes combat convoluted.
Are you seriously suggesting a random failure chance with plants that regenerate in three days is realistic harvesting, that a simple random check on whether or not you succeed is somehow complex compared to always picking the ingredient up, and in Oblivion without mods it didn't even show a graphical difference after harvesting?
I mean I can understand your liking the failure rate being there, but it has nothing to do with game depth. Oh, and they did remove repairing weapons and armor, but in its place is a more complicated crafting system, which makes it a much more complex change than merely simplification. Your opinion is your own so it's neither right nor wrong, but I disagree that it's simplifying anything.
Wait, what? It didn't take a mod to show you if you harvested something. It said either "You successfully harvest ingredient xyz" or "You find nothing of use" and if you'd already taken from the plant no hand thing came up.
I'd like it if they kept the chance of failure in, I wouldn't be too cut up if it was guaranteed success every time though. I think getting an ingredient every time is, I hate to say it, dumbing it down a little. Ingredient harvesting is the only thing I like dice rolls for - mainly because it's not that hard to find another of the same plant and like others have said, IRL you don't successfully harvest every time.
Without a mod such as http://www.tesnexus.com/downloads/file.php?id=2037 it's not possible to see at a glance that something has already been harvested in Oblivion. There's http://www.tesnexus.com/downloads/file.php?id=3979 too.