Awww.... That's adorable.

Try making them without the insults and arrogance.
You're both acting like schoolchildren, but that's particularly inappropriate. Don't do that.
Oh, shut up. You are not a victim, and I am not responsible for your behavior.
Correct. I'm the only one responsible for my behavior. YOU are responsible for YOURS and if YOU want me to respond to YOU in discussion, YOU need to cut out the insults and arrogance and engage civilly. Until then I'm not going to respond to your points.
My position is neither wrong, nor unsupportable. My position is that the spell does not make sense. This is true. My position is that given the way the spell is designed, that it should affect spell casters who target just the same as martial characters. That is also true. My position is that the spell should be re-written so that it makes sense, which I will do for my game. Those are not wrong or unsupportable positions.I've seen you in many, many debates on this forum, and you're not always wrong, but you are wrong often enough that whenever I see your name attached to a post I start with the idea that you are going to be wrong again, based on my experience of your posts.
In nearly every case when your arguments are broken down in detail and shown to be wrong, unsupported, ill-thought-out, arbitrary, and dis-proved, you post something random, almost surreal. You then get replies that point out that your latest points don't make sense, and then you 'refuse to answer the points' because those people are being rude to you.
From an objective viewpoint, when you get to this stage of the debate it's a tacit admission that your position is unsupportable, but instead of saying so or giving up you just refuse to debate the points and find an excuse as to why, thereby never having to admit you are wrong.
And here we are in this debate. Your position has been thoroughly debunked, you have no winning card to play.
My position is neither wrong, nor unsupportable. My position is that the spell does not make sense. This is true.
My position is that given the way the spell is designed, that it should affect spell casters who target just the same as martial characters. That is also true.
My position is that the spell should be re-written so that it makes sense, which I will do for my game. Those are not wrong or unsupportable positions.
I do love your argument that targeting a creature somehow doesn't target the creature, which is what happened when you argued that a spell that targets a creature doesn't target the body. The creature IS the body. How you "target" a creature without targeting the body is through area of effect spells like Fireball, not Magic Missile and Hold Person.
You guys have only "debunked" me through the use of the "Nuh uh!" argument, which fails on its face.
It may be true that this is your position, but we've pointed out that the spell already does affect casters and martials the same way! Both casters and martials who make an attack roll are subject to the spell, and neither casters nor martials are affected by the spell if they are not making an attack roll.
'Target' and 'aim' are different things, both in real life and in the 5E rules. In the game you 'target' a creature simply by mentally choosing that creature. No roll is required. It is 100% certain.
Where you are going wrong (inadvertently or deliberately, it's hard to tell) is that you cannot or will not separate the two. You think that 'target' and 'aim at' are always synonyms.
When a politician 'targets' a certain constituency, he's not looking down the scope of a sniper rifle!
It doesn't affect them the same way. Suppose a martial PC and a caster walk into a room where a person with Mirror Image is already going. It's impossible for either one to know which image is the real person as they are all identical. There is no point where they can know which one is real. The fighter just has to swing and hope. The caster, despite having no ability to know which one to target, gets to target the real one anyway. That's not equal.
Target and aim are the same in real life.
tar·get
ˈtärɡət/
noun
1.
a person, object, or place selected as the aim of an attack.
synonyms: prey, quarry, game, kill
"eagles can spot their target from half a mile"
2.
historical
a small, round shield or buckler.
verb
1.
select as an object of attention or attack.
"two men were targeted by the attackers"
synonyms: pick out, single out, earmark, fix on; attack, aim at, fire at
"he was targeted by a gunman"
The same. That's what synonym means.
They are when it's used as a verb like D&D does.
But he is aiming at them, with an area "attack".