Full AP "Support"

So, I've had this in numerous games, and it's honestly starting to really irritate the hell out of me.

The enemy "support" is nothing more than a mid laner just building full damage. No support items, just damage. Zhonyas, Deathcap, etc. You name it, they have it. Now typically, this wouldn't bother me that much, but it's when they are performing so exceedingly well that champions who actually fit that support niche(such as nami, soraka, you know them all) are outclassed, all because the enemy potential to do damage is much greater than the ability of a real support style champion to mitigate it or heal it off.

Just got finished going against a "support" Syndra who just built all damage. She would just click R and drop our adc IN LANE. This was early game. Late game it was just as bad, except anyone was a potential target. We had a Zyra building actual support items, and she would try her damndest to help him, but it didn't matter.

Syndra is just one example. You have your usual suspects such as Brand and Annie, but to be frank, you could honestly take any mid AP carry into the support role down in bot lane, build full damage, and successfully win if not roll your enemy laners, assuming the match up was ADC/Real Support vs ADC/Mid laner(Full AP)

Why is this allowed? In my opinion, it seems contrary to the "healthful" game status that Riot wants to promote. I shouldn't have to worry about the enemy support in my lane landing a stun/ cc ability on me and then vaporizing me all alone. What the hell is that?

Is it so hard to role lock items(at least in ranked) so that can't be permitted? It's just stupid and not fun.

Surely I'm not the only one who feels this way.

/endrant.

P.S.- Don't even get me started on the whole support MF nonsense.