I had to check the date on the article. They've been making GPUs for 3 years now, but I guess this announcement--although weird--is a sign that Arc is here to stay, which is good news.
I'm doubtful most tiktokers are interested in lemmy as a platform. Closest thing to tiktok that I can think of, that is part of the fediverse, is peertube.
~We want you to come back