some people were mentioning on some local thai forums that all the internet traffic in thailand is routed through the exchange in bangkok and

they constantly monitor all traffic in case of blocking some websites like they banned most of the sites in thailand

this exchange adds 30ms+ ping time

this could be somewhat true since many of you know that thailand blocks certain websites everyday

the main problem we face is filtering and censoring

this is seriously affecting gamers in thailand

Not all traffic is routed through Bangkok, but most is. It's not for monitoring purposes, though.

Shaving 30 ms is small fry especially when connecting to European / US servers.

Plus, ping (ICMP) is not a priority packet and often given a delayed route though the routers.

YMMV.