Blanket statements like that can be very dangerous. Some of the smartest and most financislly successful people I know utilise super strategies a fair bit
Sure, for now. If you are already at retirement age then go for your life. As for me, the ability to minimise taxes just doesn't outweigh the regulatory risk particularly since I got probably about 50+ years until I can 'retire' according to the Government definition by the time I reach that age.