The article is well-written and makes some good arguments about things that could be better, but like all languages (including conlangs), they're never going to be perfect and they're always going to have biases and rough bits.

I started studying Esperanto 4 years ago and it has become a fluent second language for me at this point. I now almost have more friends who speak the language than don't. While the language could be improved (by fixing word order and dropping the accusative, among other things mentioned here), it's still clear to me that Esperanto is a very easy language to learn. My comparative experience with Spanish has been much harder going.

Thanks to Esperanto I've spent time living abroad with Esperanto-speaking friends from different countries, travelled to local and international hangouts, and met some of the most open-minded and lovely people.

Outside of the hobbyist and academic contexts, there are a surprising number of people who actively use Esperanto (as well as create things: books, music, poetry, apps) and a cool international community to explore.

Just wanted to add a positive take.

P.S. There are a few articles on my blog about my own personal experience with the language and some projects I've worked on, in case anyone's curious: https://martinrue.com/articles