Yes thats your opinion and i have nothing wrong with it. Its a problem when people go around calling them a dead horse and shouldn't come back and THERE ALL DEAD. When they have no clue at all. There are more games left to make and they have yet to be confirmed that there all dead.
Think logicallcally for a moment.
How many can there concevably be left?
The mass of their organisation, including all non military assets died in Fo2.
In FO3 they lost no less than 2 command structures
For those few who surivived, you're going to have to be a hard core believer not to desert such a loser organisation and just try and get on with your life.
Bringing them back just wouldn't make a gram of sense.