Comment by ben_w

This thread is ~

  "Exoplanets also aren't planets": discuss

As the easiest to discover exoplanets (and all the early ones except pulsar planets) are gas giants, and the comment I was directly replying to had "Like a gas giant orbiting a star. It's obviously a planet", therefore "gas giants are failed stars and shouldn't count as planets" is not at all irrelevant.

Even further up to the point of if these are or are not cell, it illustrates how taxonomical categories are made by humans for humans. Historically, any connection to natural laws in taxonomies is often mere coincidence.