That's the most slippery slope argument possible. "Whoa can't refine the hit state on two arrows by a few pixels! The whole site might become anew Reddit!"
I think the argument is more “if I had to choose between the two extremes, I'd definitely prefer this one” than the slippery slope of “I don't want change because change might lead to abomination”.
Yes completely, I can't understand why Reddit hate their users so much, I find the site totally unusable and I often just leave immediately if I visit it!