If you know this, why is he bothering to say that he declines to give information about what he's accomplished? Why explicitly claim something's a secret if it isn't actually secret anymore?
Is it really so hard to understand that there are projects people don't like or can discuss in public?
This does not mean that it's not public knowledge that lots of people have made substantial amounts of money on software written in assembler. Most games written in the 80's for example. Lots and lots of business software written in the 80's and before.
There's nothing unusual about that.
And lots of software people won't want to or be able to talk about in public.