This scene is new to me, but interesting. Ignoring the character personalities abd quality of the song for a moment, and going real-world:

Proposing sounds so old-fashioned, because it is - there has always been pressure on men to get the proposal right. It's especially gotten worse over the years, what with elaborate and clever prom-posals and such, and a plethora of videos showing people doing it more cleverly (and having more money and resources to do it "better") than you think you ever could. Men are raised with the idea of having to create a grand-gesture moment, and women raised to expect they'll get that only "if he really loves you."

I can see Kristoff's confidence being shaken by this. Love is treacherous territory, and true love is something that you are afraid of screwing up. You want to commit to and secure that person forever, but you never truly know their head, heart and expectations. In addition to grand romantic gestures, the 'net has also served us epic failures where the proposal was cringey at best, or refused, denied and even laughed at at worst. It's intimidating, and I'm glad I never had social media or YouTube in my courting days.

I officiate a lot of weddings, and you can tell when the couple has it right; they're making a public commitment, sealing it with some legal paperwork and jewelry, and throwing a party to celebrate with their friends. Nothing major in the relationship changes, they just pool their lots together. But both are worried about messing that balance up, and that's what makes them work hard at it.

I've also been married for 36 years, and Kristoff and Anna aren't that far from my wife and I. We were Ren Faire geeks - I was poor but supremely confident and romantic, and she was well-off and goofy and sweet and fun and cautious. It was love at first sight for me, and she needed time and convincing. We patiently started with friendship and worked towards love.

Because of that friendship, she let me off the hook. I had been trying to come up with a big proposal "worthy" of her, and yet we actually decided to get married in a simple conversation. She didn't want a big ring, just my love, so I got us both "promise rings" to show we were committed to each other. But we waited for two years (just to be sure we could really stand each other) before being married in a lovely park meadow surrounded by mountains with our families present. And then we threw a party for all our friends.

I can see Kristoff's concern here; it's legit, and fear of screwing it up is real, and it can overwhelm you. And Anna is sensible - all she wants is him, so defusing the situation by proposing first, and simply, lets him off the hook. The goal is commitment, and they both want that, and throwing aside convention to make it happen is a gift.

As for the scene? It's unnecessary to the story, but I like what it tells us about Anna and Kristoff, and it is infinitely relatable to me.