Your first post is very dishonest and misleading. In conclusion you are comparing long vs short passwords but attach the hash algorithms to them to fit your narrative. Both points in conclusion are wrong and as noted in the comments: you would run a dictionary attack on your chosen longer password. Which is a bit ironic because this "lulls you into a false sense of security".

color me stupid but I didn't understand

"You should not be using Bcrypt. You should be using passphrases."

These seem orthogonal to each other. How would you store the 'passphrases'? in plaintext? or hashed? if hashed, what hashing algorithm? Why not bcrypted passphrases?

I read the first article.

Passphrases give us the ability to easily remember high entropy password values.

Passphrases are not high entropy once you take into account that they're words in a specific language.

Depends how you pick them.

If you genuinely do

  grep "^[a-z]*$" /usr/share/dict/words|shuf -n 4

Then on my computer you're looking at 15638751293495759880 combinations, or about 2^64.

Pick them from your own day to day vocab and you're more likely in the 2^32 range.