No, they are not superb, but a stray halogen is no where near as intrusive as stray HID, it’s so much brighter – controlled it’s no issue, that’s why there is strict legislation.
That Video just adds to my point - How many HID conversions are done in the manner shown? (which I’ll add is great and would attract no complaints) He achieves a factory quality cutoff because he has installed the projector tube and lens designed for the HID globe. Show one of the cheap Chinese H4 conversions that every one is doing. – And yes, I passed a p38a last night with a crap conversion, just north of Gympie that had over glare illuminating the roof of my truck - there is also an L322 near me with a conversion that does the same - stopped at the lights beside him a while back, it iluminates all the headrests in the car infront and he probably thinks its cool.
That projector conversion with no levelling would be exponentially better than a H4 or H7 HID shoved in a halogen fitting – which is what everyone is doing.
And for what it’s worth, factory HID lights have self levelling lights, not just suspension. Give the rangie a boot full from an intersection and the nose rises – the lights continually adjust so they don’t.
This is not a grey area - It is an illegal conversion, the article linked to by the OP is rubbish (check state authorities), for starters, head lights must have ADR approval stamps and fitted with approved globes, rarely will anyone get booked, but expect some questions if you’re in an accident, especially if another party complains.
* Halogen lamps and their globes must comply with ADRs 46 and 51, while HID lamps and their globes must comply with a different set of requirements within ADRs 77 and 78. Interchanging globe types (such as putting HID globes into a lamp designed for a halogen globe) prevents continued compliance of the lamp/globe assembly.
* ADR 13 requires that all vehicles fitted with headlamps (including HID) producing over 2,000 lumens (a measure of light output) have a self-levelling system and headlight washers.

