It might help SYAS numbers. as for whether it will help overall….
The available men have plenty of dating opportunites and by getting more of them on SYAS that will accomplish that they will have more opportunites.
if you think that the opportunities via SYAS are more likely to result in a shidduch then their other opportunites then it would be helpful if you would have more men on the site.
If the opportunities via SYAS are no more likely to result in a shidduch then the many other opportunites they have then it’s not really helpfull in the big picture.
I personally have no data and thus no opinion as to whether it will or won’t be helpful.