A couple of thoughts from both sides of the aisle.
As a resident, it's important to appreciate that we are, often, overwhelmed with clinical work and struggle to stay on top of the things that we need to get done on a regular basis, much less side aside dedicated time for teaching. That doesn't excuse what you perceive to be as being ignored altogether, but nevertheless it's important to understand this and take it into account. Residents are often tired, stressed, and just trying to make it through the day. Try and cut them some slack if you can. That being said, the "best" medical students tend to 1) figure out a way to make themselves an asset (i.e., being helpful to the team) rather than a liability (i.e., increasing the work of residents/attendings); 2) are pleasant to be around (this doesn't necessarily mean that you need to be "liked," but yes, it helps); 3) appear to be interested in what's going on on their service (one of the quickest ways for me to lose interest in trying to teach you is if you make it abundantly clear that you're not interested in the rotation or the service); 4) be reliable and do things successfully when asked.
As an application reviewer, in general most clerkship comments include the same general tone and content of student reviews. It is rare for comments to be exceptionally helpful or harmful, and generally you need to do something particularly outstanding or particularly egregious to earn these comments. I wouldn't worry too much about it. Further, part of the job of your clerkship director and dean's office is to distill the comments down to something digestible that accurately represents the themes present in your clerkship evaluations which are ultimately included on your MSPE. One person saying that you were "quiet" is unlikely to make it into your MSPE, and even if it does, it's unlikely to be harmful to you. All things considered, that's a pretty benign comment.
