It seems you and him disagree, he says ZCash couldn't/wouldn't have happened in Bitcoin and you say it could.
Is your blog post about this still coming?
https://twitter.com/matthew_d_green/status/78153309118155571... https://twitter.com/matthew_d_green/status/78154154453702656... https://twitter.com/matthew_d_green/status/78154374789720064... https://twitter.com/matthew_d_green/status/78153489377171865... https://twitter.com/matthew_d_green/status/78154782708016742...