The latter isn't extensible?
NB: highlighting is far down my own list. But if the API doesn't satisfy your biggest expressed reader nead, it's the API at fault, not the users.
We have a handy FAQ response that has probably driven ~100 feature requests :D
Submitted to Pocket Nov. 2017. Not applied.
Also I don't understand the rant about free software. If the author prefers free software why go with pocket in the first place ?