Lack of postings does not mean lack of activity on the SINTON dna.
It's just that most of the recent activity has gone on autosomal dna investigations - which aren't published on the project pages.
Should some suitable candidates pop up as new Y-DNA candidates to represent their particular lines, they would be most welcome.
See the Wanted! page - which still applies.
Have you had a success linking up family using autosomal DNA?
If you belong to the SINTON project, why not post your success on the activity feed for the project?
And keep an eye on the chromosome map on my personal SINTON pages