The rules aren't being enforced as accurately as available because they are overusing a technology to arbitrarily determine offside when it's too close to call, so when it's too close to call based on the technology available, the decisions aren't correct because they are made on faulty information. Saying "I don't know" is an intellectually honest position, and putting a margin of error into the rules that reflects the limits of the technology fits that. Coming to a conclusion based on incomplete or incorrect information just because you want the satisfaction of a decision isn't intellectually honest.
You are still arguing against a strawman you put up, literally no one in this thread has argued that we should remove VAR and go back to just having the linesman make the call.