If turkey levers are set up right, they don't suck. They don't fit into the image of a high end bike, which may or may not matter. I don't object to them, but I don't crave them, as I am adept enough at using my regular brake levers. My friend loaned me his bike for me to use as a commuter bike. I used it for an entire year. It had turkey levers. I found that they were very good for commuting, because I liked riding on the outer curves of the handlebars, i.e. with my palms facing in.

Dork disks are one bike item where my view is schizophrenic. They are a very useful safety item, and I don't use them merely out of pride, because they really do look dorky. But I recommend them to everyone except the most experienced riders. The reason is that derailleurs and derailleur hangers eventually get bent in, towards the wheel. This happens from impacts, mostly from walking through self-closing doors. Some derailleurs and derailleur hangers are more vulnerable than others because they are too flexible. Once it is bent, you will eventually shift your derailleur too far towards the spokes. If your spoke gets between the last cog and the spokes, you suddenly can't ride. If you have good reflexes as I do, you can stop pedaling or maybe even shift the chain back onto a cog. If you don't, you'll halt suddenly. If you're less lucky, the derailleur will swing into the spokes and possibly break a spoke. This can cause injury.

In conclusion, it is usually possible to set up turkey levers properly, but it's not done often enough. Dork disks are very useful but ugly, and experienced riders find them repugnant.