As a woman engineer I understand what the OP is trying to say, but it sounds callous and (surprisingly) oblivious to the realities of this field.

As someone else pointed out: "1) What is the nature of hackathons? Many are pitchathons."

I have also lost "hackathons" to projects that were objectively NOT technical (mocked-up images of an app, without a single line of code). It happens often, and it's always a bummer to lose, but often they might actually be solving a bigger issue than me or my team.

For the group of women (girls?) that won - as you pointed out - maybe they will continue doing hackathons (and maybe - despite your doubt - they even eventually progressing beyond the Wix stage) because they won an encouragement award at their first hackathon. It's like a consolation prize for mustering up the courage to present their product that was obviously not as technically advanced as some other products. That takes guts, a lot of people (men/women/other...) might just slink out the back door after the first few presentations.

So good for them, in that sense - they indeed are an inspiration for people just starting out.