Deciding to transition is a very personal choice. We are often driven to transition, simply because the alternative is something we cannot bear, but there is a choice there.
In my case, I chose to live, and that meant transition, facing my severe dysphoria, depression and anxiety, and seeking medical treatment.
I would say that the majority of transgender folks I know are not transitioning. They spend some portion of their lives getting their presentation in line with their identity to some degree, what folks may call cross-dressing, and they are able to do OK. They are still transgender folks. They still question the difference between the assigned at birth gender and how they feel internally, but they have found a path that works for themselves.
The path that works for any one of us may not be appropriate for another person. Just because someone seeks a different path to address their gender identity issues does not somehow make them wrong, and I do wish more people would realize this. Not everyone needs a medical transition. Not everyone wants a medical transition. Not everyone can afford a medical transition. They are all still transgender folks, of course.