Not the same. A more apt version using your comparison would be someone saying ‘I’ve been sober for a year!’ and the other person (who still drinks, but perhaps cheered them on now and again from the sidelines) says either ‘You mean we’ve been sober for a year!’ or ‘Yes, and it’s all thanks to me!’ - never mind they didn’t actively step in to help, or try to go dry themselves.

That's literally not the claim being made by these people in the OP taking pride in their community's accomplishments though.