Is Tumblr back?

For Gen Z, yes. Gen Zers are 60% of new sign ups according to data shared with Business Insider:

Part of the reason young people are hanging out on old social platforms is that there's nowhere new to go. The tech industry is evolving at a slower pace than it was in the 2000s, and there's less room for disruption. Big Tech has a stranglehold on how we socialize. That leaves Gen Z to pick up the scraps left by the early online millennials and attempt to craft them into something relevant. They love Pinterest (founded in 2010) and Snapchat (2011), and they're trying out digital point-and-shoot cameras and flip phones for an early-2000s aesthetic — and learning the valuable lesson that sometimes we look better when blurrier. More Gen Zers and millennials are signing up for Yahoo. Napster, surprising many people with its continued existence, just sold for $207 million. The trend is fueled by nostalgia for Y2K aesthetics and a longing for a time when people could make mistakes on the internet and move past them.

Tumblr also benefits from TikTok's near-ban and platform politics backlash:

Tumblr seems to be a refuge for people searching for new social sites. In January, people launched communities on Tumblr to post and preserve their favorite TikTok videos. Meanwhile, progressives mad at Mark Zuckerberg and Elon Musk for going full MAGA and are ditching Facebook and X as punishment.

I do find myself increasingly nostalgic for the older internet. The one with less algorithm and more human curation. Less influencing, more "this could be interesting." Good to know Gen Z is feeling it too.