I am sorry to disagree, in Israel where I live there are plenty of good religious men from 40 years old and up who are either divorced, widowed or bal t’shuvah.
The problem started as a age problem but becomes a “flexible problem” and where peolpe are boxing themselves in and not willing to settle for less in order to have children and a Jewish life.
I think there should be seminars organized by Gedolim to have Rabbi’s and professional people give guidance to this group.
Many people have a non Jewish view on what marriage is and how to approach shiduchim, even those who have gone through good Orthodox schools and Yeshiva’s.
Being involved in shiduchim many years I have seen many potential matches broken by petty reasons. Many people are looking over their shoulders thinking what others will say and not thinking is this person good for me or would they be a good parent or spouse
Many people in this group feel disenfranchized, lets invite them for Shabbos and Yom Tovim, lets make list of the singles that we know and get together once a month with a group of friends and relatives and read our lists to see if there are any possiblities, lets befriend them in any way we can.
Let us all wake up to this serious problem and solve it by getting involved in any way we can.