Yes, this is definitely out of order - and very embarrassing - to do this on a regular basis. As PP have said, hearse, removal lorry, massive delivery etc. is fine - but not just because you think you're more special than everybody else.
My FIL used to know a couple where, whenever he went out in the car to the shops, she would go out and spend the whole time sweeping that bit of road so that she was 'occupying' it and nobody else would feel they could park there. What a waste of your life - especially when there's no shortage of parking on the road anyway.
We have a neighbour who doesn't use cones, but he does leave notes under our wiper, telling us off for parking safely, legally and not blocking anybody in. He has two cars and a double drive, so he doesn't need to park on the road at all, but he has actually stated in one of his silly notes that he does own part of the road. It's just selfish, bullying behaviour, and extremely arrogant to presume to tell people that they can't use a resource that the actual owner/manager (the council) has clearly indicated that they can.
He threatens to call 'the authorities' on us, and we desperately hope that he does - as he will just look so stupid then, when he wastes their time to show them somebody doing something very boringly mundane and totally legal and they tell him off for harassing us.
I'm guessing he actually knows that, otherwise why wouldn't he have called them before? Some people are just so entitled and arrogant that they genuinely believe that whatever they prefer - even if it makes no odds to them at all - is accepted as de facto 'law' and everybody else must kowtow to their every whim. It usually comes from a place of having too much time on your hands and a self-imposed very, very small world. They could take up a fun hobby or volunteer for a charity/community cause, but instead, they genuinely get their kicks from monitoring where other people park their cars and finding any old thing to complain about.