General Discussiondbuff mod/admin pls take a look at this

Obviously not legit.

Most likely a bot that is in shadowbanned pool due to sandboxie.

They don't care. Take a look at these:

http://dotabuff.com/players/170551398
http://dotabuff.com/players/165061762
http://dotabuff.com/players/133951301
http://dotabuff.com/players/109335272

that's 5 man stacking in russia, now go change ur name

^You mean 10 man stacking?

if it's 10man stacking why bother getting poor man shield?

and how did they lose this game? http://dotabuff.com/matches/791970930
there's no abandon so the only way is dire throne them, but wouldn't the xp given by all the towers and creeps while pushing gave the whole team more xp than what they ended up with?

These are item farming bots and not KDA or winrate whores otherwise they would be going after kills.

EDIT: @fakewave two of those people you posted are legit players and just got high winrates by stacking so I don't see the issue?