>>103553833
No, you can easily unfollow someome by double clicking the options button on a post. For some godforsaken reason the geniuses at x.com decided follow/unfollow should be the first thing that pops up RIGHT after you press the options button.

So you can double click yourself into following/unfollowing someone especially if you want to see the post engagements (aka quote RTs).
Is this what happened? Who fucking knows. Has this happened to me many times on desktop twitter? Yes. That's all I'm adding.