It seems like assisted knives are usually more accepted than automatics. At least most of the localities, states, and countries that ban automatics seem to accept AO’s. I don’t know about the Netherlands, but if you see it in an officially licensed retail shop and not at some shady night market, chances are it’s legal to possess. Doesn’t mean you couldn’t get some crap over it (AO’s are still sold in retail shops in places in the US where the laws are sketchy), but if you’re responsible and don’t go snapping your knife out in public scaring people, you should be fine.
If I had a relative in the Netherlands I wanted to gift a knife to, I’d play it safest by making it something like a Buck 110 or a Gerber Paraframe. Simple, safe, and not menacing at all.