Have you played other Souls games? Because they all have an exploit or three. It's part of the game.
To be honest, these only work to a certain degree. Due to the design, you need more and more souls to level. At some point, 99% of us get tired of dodging the rock and move on when we're level 20 or whatnot. Which is nothing. Of course, there's that 1% who won't leave until they hit level 100, but whatever.
Plus, with these games, you will never level enough to insta-win. I have been drastically over-leveled for areas, but will still die if I get sloppy.
Any other game, I'd agree with you. But not Fromsoft games. It's a legit part of it.