Definitely.

His ideas are only radical if you think capitalism is the only way to structure an economy.

I second this. Amazing essays.

Shouldn't anarchists be taking the word "libertarian" back from ancaps and other propertarians?

Yes, lets, wherever that's happened. Some places have not suffered this usurpation and perversion of language.

Leftists need to focus more on being understood by the average person. Redefining words and trying to take back redefined words doesn't help that cause though I make an exception for "The Left" "Leftist/ism" etc.

https://www.anarchistnews.org/

https://theanarchistlibrary.org/special/index