There didn't seem to be any rhyme or reason for the following. He doesn't seem to have much interest in Turkey other than as a Christmas roast. Doing some analysis on the accounts didn't really reveal much other than that there were many low volume accounts.
Today, however, many of these accounts seem to have seen the error of their ways and have abandoned @6000.
This is what his follower graph looked like on Friday:
(The x axis is the order of following, the y axis is the date the accounts were created, colour = language)
Did twitter suspend them for so-called "inauthentic behaviour"?
Doesn't look like it. Of the 5492 accounts that are no longer following @6000, only 73 are suspended by twitter or deleted by their owners.
So, what is going on? Why follow somebody en masse and then unfollow them 48 hours later?
I suspect that these are spam accounts that are looking for follow-back. By building a following of credible and "real accounts", spam accounts can gain a veneer of credibility.
Conclusion: These accounts were likely looking for follow-back and when they didn't get it within 48 hours, they simply unfollowed and moved on.
It's a bit unsatisfactory as an explanation, but it is the most likely one.