Of course they are. They instituted the 100k limit.
Then again everyone else is piggy backing off of Twitter's own work.
Though thats hypocritical in the extreme. Twitter was built on getting devs to make apps/clients. Then once it got popular they pulled the rug out from everyone and started to try and force people to no longer make clients. It seems devs as masochistic enough to keep working with them though, like beaten spouses.