https://www.techdirt.com/articles/20180212/10355739207/verizon-owned-tumblr-joins-latest-effort-to-restore-net-neutrality.shtml

Given Verizon's long-standing animosity to net neutrality (and openness and healthy competition in general), the company's acquisition of Tumblr created some understandable tension. Tumblr has been on the front lines of net neutrality support since around 2014 or so, with CEO David Karp stating in 2015 that the service wouldn't exist without net neutrality:

"(Undermining net neutrality) would congeal the Internet into something stagnant, something where new players wouldn’t be able to join the game without having the funds to do so. I’m proud to have been able to turn a little side project into an engine of creativity for so many people. I don’t want to be among the last people able to do that."