At a course near my they have two holes where electrical wires cross the fairway. If you hit them you have to replay the shot. It's not optional.
Exactly. I have played courses with that as well. Why don't they use this rule with things like scoreboards at tour events?
While I hate the commonplace usage of the rule on tour, what if the scoreboard was exactly on your line and trajectory? and it was the only way to hit the required shot.
You can let me replay it all I want, but if it's dead in my way, sure I can avoid the TIO, but I may have no chance to hit it where it's a desirable outcome(an option that would've existed without the TIO). So now I'm forced to play it as near to the scoreboard/TIO as possible, and may need multiple tries due to how close I'm cutting it.
Frankly, I'd rather they do away with line of sight TIO and simply treat them as obstructions, and PERHAPS give a bit more thought about where they are placed and their potential impact on play.
Rules are hard, and almost every attempt to "simplify" them has led to unintended consequences as well as confusion amongst those who once knew and understood the rules.
Perfect example: hitting a ball accidentally off a tee being no penalty made perfect sense if you knew the definitions.
But now, they've decided that hitting a ball accidentally on a green is an exception to the penalty for a player moving a ball. An exception that must be memorized, as opposed to simply knowing the rule and the definitions. (which sadly, few people bother to learn)