Honestly, it sounds more like just an advertisement for their "lifestyle blog". Just like everyone and their mother is vegan now, and has to make sure you know it every second of the day.
"Look, I'm a founder! I put a web app up!"
"Sign up for my newletter, my blog, my instagram, my X, Y, Z so you can find out how to make the same ad revenue I do, off of people just like you! You don't have to be you forever..you can take advantage of the yous and become one of the mes!"
/s
.. sometimes telling people you’re vegan can help avoid awkward situations like when a friend got some cake they wanted to share.