This ruling doesnt concern me as much as some of the shenanigans that seem to go on at some of these Forex brokerages. Living in the US I have easy access to plenty of well capitalized Forex brokers. I see no need to stray from the top of the pack.
However, I am concerned about holding large amounts of capital in any account, Especialy if running EA's or
short 
term day trading. All of these Forex brokers seem to have devious tricks to take your money away from you. Lost connections, phantom trades, ignoring your stops and targets, this all seems unique to the Forex market.
I dont think I could be comfortable putting any substantial amount of money in a MT4 account, especialy one that has EA's attached to it. A manual account, even if its MT4 is a bit different. However the reliability and safety of the MT4 platform does concern me.
Ken