These are rumours....Cabal_NA has alot more strict GMs because its hosted by EST directly, no NA don't have many bots like EU...Cabal rider does not even support CabalNA or any EST hosted version I guess.
GMs actively ban users if they are not careful (Getting disconnection flag ect)...and also cabalna has direct report section on forums to GM....
[Only registered and activated users can see links. Click Here To Register...] so any day you see a bot/hacker you can post it in that thread and GM will ban it within few days or so if there is proof ect....
Only bots that exist in NA, are there because they are not reported by a player most likely, or not detected by GM. GM might not do patrol but the numbers of bots are pretty low in CabalNA.
Last, yes you can play in NA with changing IP, but there would be some lag as you can imagine because your client's connection is routed through proxy server before reaching cabal server.... One program I can recommend to you is "proxycap" and then google "socks5 proxy US" and plug in the proxy IP to proxycap, and set rules for cabalmain.exe TCP&UDP, and maybe gameguard.des gamemon.des files too if you wanted but I don't think those are necessary, only cabalmain.exe rule is needed so your IP is routed. After setting rules/proxies you should have settings looking like following:
[Only registered and activated users can see links. Click Here To Register...]
[Only registered and activated users can see links. Click Here To Register...]
Then just goto Proxycap Icon at bottom right hand in taskbar and right click then click "enable", after this you should have no problem connecting to whatever version you wish, but will be lag compared to playing in EU without proxy...
Also don't bother using those IPs, many are old and probably down. I just google the IPs from sockslist and add then see which works...