Yeah, I guess under that definition any web-based application that allows for a person to create an account/profile and generate and post content is a form of social media. That makes sense when you consider that they’re media that allow for social interaction.
What’s your definition of social media? Genuinely interested because I’m not sure that there even is a single definition that can be agreed upon.
I think the whole public vs anonymous profiles thing doesn’t really stack up, as I can create profiles on Facebook, Instagram, X, TikTok etc and provide no identifying information about myself, much as I do on Lemmy. I can also choose to add a profile picture and info about myself to identify myself on Lemmy if I choose, much as people do on other social media.
If your definition only includes those platforms that force you fully identify yourself in order to maintain a profile, that list will be pretty small and exclude a lot of sites that the vast majority would consider to be social media, including the ones I’ve named above.