IMO, what's fucked is thinking about it in terms of "leagues". I'm not criticizing you or that show specifically for talking about it, I just find the mentality to be a pretty bad one and I wish it would stop being promoted as normal and healthy. If we didn't all worry so much about a potential partner being of an inferior status to us or vice versa, there might be a lot less "undateables" if any at all. There'll always be issues of compatibility of course and those with disabilities will generally not be quite as compatible with the non-disabled, but this lowered compatibility is all too often converted into an abstract 'unworthiness factor' which then harms their chances even further for no good reason. If (and I say 'if' because it's not necessarily true across the board) stutterers are indeed perceived as being in a 'lower league' than non-stutterers even when it's mild, then it's likely because of that superficial perception of who is inferior to whom, in which those with any abnormality are often considered unworthy of "normal" people. On the bright side, many/most people don't actually think like that, or at least not in all situations. So especially if you have a mild stutter, it shouldn't be excessively hard to find someone who acknowledges that a stutter is functionally irrelevant to a relationship and will date you regardless. A heavy stutter might be a bit more of an "issue", but again, it's all about finding someone who doesn't buy into the stigma.