While it’s certainly true that some classes of bugs are very easy to fix (“oh shit I forgot to apply the correct style”; “I mean to use this method whoops”), many bugs that exist in later-stage games require pulling a bunch of shit apart to figure it out. They’re in the same pool of difficulty usually as performance optimizations or balancing new functionality. Getting a successful test case can be difficult even if the bug is readily apparent. Getting the regression test to pass is the subject of a plethora of literature. It can be hard and difficulty often scales with codebase. If the bug was obvious and easy, it would have been done before.

If it was obvious and easy and wasn’t done before because of time constraints, devs can still charge more because their wages should have gone up. This whole thread OP is kinda nuts (not the commenter I’m vehemently agreeing with and expanding on).