Thanks for posting this, I came here to post the same thread.

For those who are unaware: Thomas Pornin is a professional cryptographer. He's a member of the NCC Crypto Services team and one of the authors of the Sosemanuk stream cipher, which was part of the final portfolio for eSTREAM. He's also involved in the development of one of the cryptosystems which has made it to round 2 of the ongoing NIST PQCRYPTO standardization process.

His writing on crypto.stackexchange is prolific and highly informative, and this is a strong rebuttal in particular.