As someone who actually uses tumblr (since 2010), I can safely say that no one has to list every single thing about themselves. The reason why many do is the fact that trans and other minority communities are plentiful on tumblr and it's a fairly safe assumption that if you open a random blog, the user will be a part of the LGBT community or anything but white. Simply, in the context of that site, using those labels is very much justified. But again, no one is required to do so (I don't).FirstNameLastName said:The world isn't like tumblr when everyone has to list every single thing about themselves.
Either way, I'm with you when it comes to "cisgender is being used as an insult" thing. Where exactly do people see this? I see tumblr being thrown around as the source, but I've been on tumblr five years and have never seen the fabled "die cis scum" being used. Did someone use it once or twice in a serious way? Probably. During my time on the internet, I've seen tons of shit, including people who believe the Earth is flat, but I do think people like that (including the ones who yell "die cis scum") are an inconsequential minority that no one would ever had any contacts with if someone didn't dig up their shit and spread it around for laughs.