It’s just a feature I think a of of people find attractive, big or small. For most people I think it’s not necessarily a deal breaker but a small +/- towards attraction. I can’t tell you exactly why I like certain features like the nape of the neck, just that I do. I’m not going to dismiss someone as a partner for it either but it’s a small +/-. Height is just the mainstream version of that cause a bunch of people relate. Some people like to be made to feel big or small by their partner, height differences can do that.
There will always be the shallow people who dismiss someone entirely based on something like that though, probably best to avoid those people.
I just wanted to add, that the heat pump effectiveness is true but a big part of the loss on tiny fridges is the insulation. Many manufacturers cheap out on that front for mini-fridges. You run at a greater energy consumption to compensate for the lack of proper insulation.
Get a good, well insulated mini-frige (using a proper compressor/heat pump) and you’re all set. Buy once, cry once, and do your homework folks!