It’s not at all about indecisiveness. It’s about the fact that people are expected to make the most important decision of their lives in a matter of days. I have a number of friends who have been dating for years but either they or the other wanted to continue and felt they needed a few more days, but of course the shidduch had to end. When did the whole shidduch system become what it was. Surely we all know that even in the frum community, years ago men and women , boys and girls, actually met each other on their own, didn’t have to necessarily go through 3 channels , shadchan mothers sisters etc to see if a date should even take place. I think that the current system treats these potential chosson and kallahs as children, and if you believe they are children, then they shouldn’t yet be married.
I will also note that more and more people I know and meet are divorced by age 23 and it shocks me every time but I am unfortunately becoming desensitized to it.