Nah, it’s not a literal statement. It’s a rude way to say “I don’t want to talk about this”. It can be due to a genuine lack of interest, or if you’re trying to have an emotional conversation, it’s a malicious way to downplay your experience.
It’s a big old world and there’s always at least one person who will care about something.
People use social media for different things. I never used Instagram to meet people, personally. I’ve posted art and I’ve uploaded photos just as a way to show long distant friends what I’ve been up to, but those friends and I mostly talked over text so I don’t know if I ever even looked at my DMs.
I do actually think social media has made me bad at talking to people irl though, but for different reasons. The way I made friends on Tumblr was I’d post a character design and wait for someone else who designs characters to comment, and then we’d talk back and forth about our characters for hours.
Now I’m trying to remember how to make friends in person and it’s so much more intentional. You have to actually ask questions and broadcast your interest in people instead of assuming they’re going to infodump on you. You can’t take five minutes to think up a reply because there’s no going afk. You have to have interests other than a gay man you made up.