Can't disagree with Twitter's reasoning there, anecdotally I myself have done that many times.
(This doesn't happen on my phone but I am more likely to have configured it than your average user.)
I watched them every single night often multiple times accidentally click the ads that load above on youtube (about 1 second delayed, perfectly as they went to click). They would of course always click back once they noticed it, which with slow internet takes more time too and probably doesn't look as much like a bounce.
It's the perfect cover for Google. All the techies who would get outraged by something like this generally have fast internet and ad-blockers.
gmail on Android has ads? and they're disguised as email messages?
... no wonder they're killing Inbox