Bian's plan was retarded. As
>>6417732already mentioned, he didn't even pull it properly and let the scum and power hungry who worked for him and lusted for world domination or mere chaos outlive him to cause troubles for many years after the end of the DC wars.
Also, the DC wars did shit for the development of the EFA, the grungust and huckebein projects predated the war for a few of years, the SRX project was already under development anyway, ditto for the wildschwein and wildraptor, etc. And to add salt to the injury, that plan effective branded Elzam and Zengar as traitors who can't directly help the EFA and have to live in the underground.
The only thing Bian's rebellion achieved was ... actually, it didn't achieve anything. It gave some battle experience to rookies like Ryuusei and Ryoto but that's all. And instead of making it look like the DC ruined negotiations between mankind and the aliens, he could've easily exposed the corrupt officers who wanted to surrender the planet to the aerogater and do it looking like a hero.