Ok so even the article you posted says that those machines that show you naked have not been in use for a long time and when they were in use it was phased out pretty quickly.
It also says the image in there is from 2010 and the veracity can not be guaranteed.
So very much no the airport machines cannot see you naked.
The TSA scanners at airports really can see you completely nude.
The ones at the toilets are simple IR sensors to detect if the toilet is not occupied so it can automatically flush.
Ok so even the article you posted says that those machines that show you naked have not been in use for a long time and when they were in use it was phased out pretty quickly.
It also says the image in there is from 2010 and the veracity can not be guaranteed.
So very much no the airport machines cannot see you naked.
Yes they can see you nude, but those specific machines have been removed from unspecified airports,
The one in Sydney for sure still can image you nude. Ask me how I know.