So? Can you prove that the address they sent to is owned by someone that controls all those bitcointalk accounts?

Do you even know who the owner of that address is? The answer is no.
You have no real proof that ties half of those accounts together. Don't get me wrong, I'm not trying to defend cheats... and I commend you for trying to catch them... but you can't just point to two accounts, say "they transferred tokens to same address... they're alts... ban them"... that isn't how it works.
Two addresses that transfer tokens to the same address are not necessarily alt accounts. You need more proof... like:
There I made a mistake. The name of kh bhuiyan was attached to the name of moshiul13, there will be kh bhuiyan instead of moshiul13
You can Find 6 different address which is owned By
arnobs07 ,
Nursahath07,
kh bhuiyan ,
MD.SAM ,
zack21 ,
xwshaamim They Posted Their ETH address
arnobs07=
https://archive.fo/owqlJ#selection-668.3-668.4 0x34218baf88ea69136bbae587b0e58e31d47c11ac
nursahath07 =
https://archive.fo/owqlJ#selection-1297.0-1300.0 0x3837285fd1446d1df22b6e5d233dd2ab4d6eeee7
MD.SAM =
https://archive.fo/owqlJ#selection-1913.1-1912.2 0x52E190b02760a090745bCCfbA0379b65cE720DdE
zack21=
https://archive.fo/mdj7q#selection-7779.0-7782.0 0x909c10ba205181d6c7d9f14fd304e2f7773975bb
xwshamim =
https://archive.is/VkLyX#selection-3789.0-3792.0 0x322b157f6b6cc3aedf2c188e8e6bac13a94d6965
kh bhuiyan =
https://archive.is/rfPvz#selection-5715.0-5720.0 0xC419fBe02d737883513B3CAa96d6053Bf1ce5213
Divi Exchange Token In this Address
0xee7368a0bf4efd3d310d6249395f1f2a55cc77b2
https://archive.is/z3Kol#selection-1753.0-1753.4https://etherscan.io/token/0x13f11c9905a08ca76e3e853be63d4f0944326c72?a=0xee7368a0bf4efd3d310d6249395f1f2a55cc77b2I apologize for the little I did, but the thread that I have given is completely accurate and hopefully, you will take a recapitulation of it.
I hope you find the right information now if you do not get it yet, but I will request you to see these accounts. It seems that you will find something suspicious and get the connected account between them. I can say for sure that their accounts are running the same person and there is a connection between them.