This is such a hard and complicated topic for many of us in the diabetes world.
I would love to say that there is never a need for a distinction or that I have never felt defensive about MY diabetes, but I can't honestly say either of those. What I can say is to repeat what multiple of others have said about the need to end the blame game. Blaming anyone for their diabetes, or any other disease, is not only not helpful, it is extremely harmful. The more I think about my defensiveness, the more that I realize that the blame game played by society has been harmful to my emotional wellbeing and led to me joining in more often than I should, which is never. Like it has already been said, it is so easy for T1s to use T1 as our defense against society's blame game without even consciously realizing that we have just joined the game in blaming T2s.
I am a T1, but come from a family with many T2s on both sides. When I was growing up, my paternal grandfather was an insulin dependent T2, at least as early as I can truly remember. I used to love watching him test his bg and give his shots before meals because it was so intriguing to me. During my preteen and early teen years, I started to realize that many people assumed T2D was caused by obesity or other lifestyle choices, and that didn't fit with my family experience where both grandfathers were slim, active and T2. Being diagnosed at 17, I wasn't (as) afraid of the needles and the daily requirements of T1 because I had watched my grandpa for so many years. His T2 experience helped my experience as a T1, including one of his first pieces of advice to me post-dx to be careful with those sugar free sweets because sugar alcohols can act as a laxative. He was 89 at the time and got the whole family laughing at the Thanksgiving table, only 2 weeks after my dx. And my T1 experience has been helpful to multiple family members with T2. Like when that grandfather had a nurse at his nursing home give him an insulin shot to "treat" a hypo and my dad and his siblings needed to understand what that could have caused if another nurse hadn't caught it, or to help both parents consider carb counting without any suggestion or help from their own healthcare teams, or giving my dad injection tips as he recently started taking long-acting insulin.
Life would probably be a little easier if all diabetics, of every type and variation, overlooked how our diabetes varies from one another for the sake of supporting each other.
Also, I want to thank all of you and this thread for reminding/challenging me to be defensive against society's blame game for ALL diabetics not just myself or simply T1.