Speaking of 'easier to navigate', don't forget that English is also peculiar in that there is typically just one differently-conjugated form of a verb: third person singular (he/she).

For instance I sit, we sit, you sit, they sit, but she/he sits. Something to reflect on if you ever try to learn German. Twain had some unflattering things to say about German conjugation.

John McWhorter has some ideas about how this came to be: the simplification was from the Danish settlement on the main island. Most Danes learned the local language as adults and the Norse they spoke had the same third person singular conjugation, so that stuck - but the others got dropped. Having dealt with adult learners of English, this rings very true. Many just get to 'airport English' which uses a single conjugation of each verb (and good on them: my command of a number of other languages is just as rudimentary or worse).

As a side note, my wife brought one of her students home for dinner. We had no language in common, but as we both worked in datacom/crypto we had no problem communicating. So, to anyone who says nerds speak a different language : yeah, we kind of do.

All that said, English does still have an (albeit regional) plural pronoun: “y'all” (I’ve herd it spoken as “you all” a few times, but that seems to be going the way of “cannot” / “can’t”).