The full article doesn't mention it, either, there is and will remain a lot of confusion about federated networks and that there isn't a single "Mastodon" to jo

The full article doesn't mention it, either, there is and will remain a lot of confusion about federated networks and that there isn't a single "Mastodon" to join a la Twitter. Part of the confusion may be that there is a non-profit Mastodon gGmbH which supports the software as well as running mastodon.social. I wouldn't read too much into this, it's relatively low-commitment to copy Twitter posts to fediverse, it's not like they are solely going to make social media posts on Mastodon. I would assume VW has a presence on Facebook, LINE, Weibo, etc. like any large multinational.