What people need to do is stop taking it personally if someone is not chatting. In all likelihood it has nothing to do with you as a player or any other player in the group.

Sometimes my boyfriend and I choose to do DF together and we talk back and forth to each other (IRL) about the run or random stuff because we are spending time together as a couple. So we are quiet in the game because we are more focused on doing our jobs well and having fun talking to each other while doing something together we both enjoy. I don't ignore if people ask me something but I am there doing the job I need to do so I don't see why I must always make idle chit chat in random DF groups.

When I am by myself I am still generally quiet in runs unless asked something but I do say o/ or hi when I join DF groups; it doesn't mean I am rude or unkind. I am a pretty neutral amiable person unless people are rude to me. I am just having fun playing my job. Putting down my controller to type just isn't something I do much unless someone directs something at me (or if someone starts harassing anyone in the group I will tell them to stop being rude) or if I choose to join Mentor Roulette then I am ready to type out explanations etc.

I don't hate other people or something I am just having fun in my own way; you can't force people to chat if they don't feel like it. If you try to force them or get offended if people don't then you are just getting irritated about something that in the end doesn't really affect you. It is not like a healer not healing or a tank not tanking. They just don't feel like chatting. You'll still get your run done.