Do you have any information about this? Where did you hear this? I'd always heard it was because some people at Apple used Twitter, but nobody used Tumblr, so Tumblr didn't get a free pass from arbitrary torment.
1. Apple executives like Phil Schiller used Twitter for years.
2. Apple bought advertising on Twitter.
3. https://sreegs.tumblr.com/post/671649355334336512/alright-le...