Some people on Twitter can post 35k-char tweets
twitter.com
twitter.com
> Spam & Security
> Access, tamper with, or use non-public areas of Twitter, Twitter’s computer systems, or the technical delivery systems of Twitter’s providers (except as expressly permitted by the Twitter Bug Bounty program).
> Interfere with or disrupt the access of any user, host or network, including, without limitation, sending a virus, overloading, flooding, spamming, mail-bombing Twitter’s services, or by scripting the creation of content in such a manner as to interfere with or create an undue burden on Twitter.
https://support.twitter.com/articles/18311
I agree this was not a spam issue (many found it informative), but, depending on how this tweet was done, it could be a security issue.
I'm actually quite surprised nobody actually thought to verify that until now.
However the tricky question is, how he tweeted that? Twitter's telling me the tweet is too long if I try to tweet the same text.
EDIT: Just seen someone explain it: https://twitter.com/hexwaxwing/status/926919811820609536
Here's a paste of the full response https://pastebin.com/MNRjjx45
> Twitter is over capacity. Please wait a few moments then try again.
Twitter caught on quick