The Explore section is a list of the most shared recent posts, it's not quite the same thing as someone's home timeline being messed up because they liked the "wrong" thing.
This thread is mainly aimed at non-technical people who are too scared to like or share something in case it changes what they see in their timelines. This is what happens on many algo-driven commercial social networks now, and I'm trying to reassure people it doesn't happen on the Fediverse 