But meanwhile it is sometimes fooled by the advertisers themselves.
When loading this help page for example I often saw a link inside of
the column
'Sponsored Links' called 'Javascript jobs' or the like. Clicking on
this link revealed that the offering had nothing to do with javascript
at all.

I suppose there's nothing that can be done from Google side against
this misuse.

But if the user cannot trust in Googles original intention, and even
Google cannot
trust in it, then there's not very much left of the original purpose.