The point was it is relatively easy to freeze some ones account, you thought not, it has happened
In dictatorships, like the Democratic Republic of the USA, the government can seize any bank account any time. They have secret laws, and special government departments can issue secret gag orders which are called "National Security Letter" in the "Land of the free". Japan is a democracy. Not as easy for foreign governments to seize money there.
Nether do you now deny your second error (quite large) that you though some how GOX's lawyers were in a court fighting this, yet GOX themselves knew nothing about it and they publicly said so. That's just basic research of the facts and understanding of what happened.
No account belonging to MtGox has been seized or frozen. The accounts in question belong to Mutum Sigillum LLC, an US payment provider which MtGox uses. We do not know why Mutum Sigillum LLC were targeted. MtGox is affected, but I doubt they would ever get invited to court to defend another company.