First and foremost, in my mind, is dating apps. As a concept, they can be great - much more efficient than approaching people randomly and hoping that they're single/available and interested in you. They're only on these applications to meet someone. A great way to connect to others who are, in theory, looking for what you are. The downside is that there is zero "room for error." One miscommunication, cancellation, or mistiming and someone can miss what would have been a potentially solid connect. And, if the first meet-up isn't mind-blowing, there's no "need" to give a second look, because you can just keep swiping away. Anecdotally from stories, it sounds like patience in getting to know someone is in short supply. Worse, some get addicted to the rush of all of the attention and forget what they originally wanted, which is a chance at a long-term relationship. It can be human nature to still be holding out for the next best thing. This goes both ways, and it would be wrong to pin it on men or women as culprits.
Second, radical feminism has not been good for women and marriage/family. They're blasted with messages from Western Society that they deserve to "have it all" their entire lives, and that making sacrifices to have families is some evil, patriarchal concept. This is how we get to tragic situations where women freeze their eggs at age 30 and then circle back at 45 to find that these modern medical solutions have significant failure rates, and that it's now too late. Or that establishing big-time executive careers is their first priority, and that they should consider settling down at 35 after they've "made partner" or achieved whatever abstract ideal they need to accomplish has been completed. The problem is that then, they still have to start the process of finding someone who wants to settle down with them and connect their lives when over 90% of their eggs are gone.
Third, as a corollary to #2, there is too much messaging that wanting a family is a silly, antiquated, Stockholm Syndrome relic of a patriarchal prison. One can argue as to the reasoning behind this all you want.