They basically took a look at Sweden and said "we're not going to be that stupid", then became maybe a bit overzealous, which is understandable because Denmark's worst nightmare is to be in any way like Sweden. Things like furnishing social housing policies to nip ghettoisation in the bud, they went to almost Singaporean degrees there.

They've also been on the market liberal side, that is, Denmark is pretty much hire+fire with a great social net, not like many other European socdem systems "make it exceedingly hard to fire people, if workers still manage to be out of a job then beat them with random low-wage work until they relent". Odd one out in many regards but policies being uncommon doesn't make them not socdem. Other things to admire them for is their lack of NIMBY problems, their solution is simple: Give a fuck about people's backyards and if their backyard is in the way, be understanding, apologetic, and generous when it comes to compensation, and transparent along the way. Transparent as in "We're planning something in 15 years, have five different alternatives, two of which would affect your property, you might want to participate in the process". Compare that with the German process which is a) make a plan, b) decide on that plan, c) inform people about the plan, d) get sued into oblivion by everyone, e) start over.

Don't get me started on their wild boar policy, though. Danish hot-dogs are very fine just make sure to not have Danish sausages in them, no, cooked meat is not supposed to be red.