They're probably hacked accounts as well. Look at the registered dates of them:

https://bitcointalk.org/index.php?action=profile;u=398174     alex1736 November 26, 2014
https://bitcointalk.org/index.php?action=profile;u=368869     DARKCAPITAN August 20, 2014,
https://bitcointalk.org/index.php?action=profile;u=879567     bobsat July 19, 2016
https://bitcointalk.org/index.php?action=profile;u=391361     mantavy4 November 01, 2014
https://bitcointalk.org/index.php?action=profile;u=765018     konishua February 11, 2016

All of the above ones except two have zero posts until recently. The other two have one post back in 2016 then nothing until they start bumping that thread.

The Japanese are something bad conceived. It is necessary to observe the activity of the local topic https://bitcointalk.org/index.php?topic=3163031.msg32706386#msg32706386 There's probably all bots