IMO, it's not so much accepting the good with the bad when dealing with Spiders. It's more dealing with the good and the odd. I currently have 4 snakes with the Spider gene, and each displays the wobble differently. While none are the classic train wreck, they do vary from a very subtle shake when feeding (what I call the meat shakes), to a semi-controlled loop when looking up. It's not really a detriment though. This girl for example is the worst out of all of them.
...But as the argument goes, they don't get to be 2100g plus if they don't thrive. She's a gorgeous, big healthy girl and a total sweetheart. Sure, Spiders and they're variants are not for everyone and it may take some getting used to, but there's no reason not to have them around. It'd be a real shame IMO if people stopped breeding them and they disappeared from collections and the market in general. They really do bring something special to the Ball Python world.
Dave