Here are some facts I’d like to see:
1. No. of males taken out of the shidduch pool because they are OTD, social misfits, not marriageable material
2. No. of females ditto
3. No. of male baalei tshuva in shidduch pool
4. No. of females, ditto
5. Geirim
6. Females ditto (not sure of correct dikduk – misgayeros?)
I think we would find that because women are naturally more spiritual, the number of women being added to the pool is greater than the number of men, and conversely (also related to higher male rates of autism spectrum, social skills issues. For OTD there can be many other factors.
In any case, the above factors must be contributing to the disparity to some extent. So, if you are wondering where to put your tzedakah dollars, perhaps organizations dealing with keeping boys on the derech, and improving their marriageability, would be more productive!