Years ago, there was an HN article "You Need More Lumens"[1], which in turn led me down a rabbit hole.
I ended up purchasing:
4 standard table lamps from Target,
28 2000-lumen Cree LEDs bulbs[2] and,
4 7-way splitters[3].
The end result is somewhere around 56,000 lumens. And I LOVE it. Makes me much happier in my home office, especially in the winter months.[1] >>10957614
I never got around to putting them on a dusk-to-dawn timer, so they've been burning 24/7 since I purchased them at the end of 2020 (except for the occasional power outage, of course). I paid $20/each for them.
Sample size of 1 (technically 2), but there are definitely products on the market that meet your criteria.
but as someone who appreciates darkness I'd be really upset to live near someone who did this.
Unless you can keep your light on your property (as in, you are extremely rural).
why are you lighting up outside unless you are outside in the light?
As for the "why", the answer is security. If someone attempts to hide in my yard, they'll find it quite difficult to remain unseen.
Most of my neighbors have floodlights of their own (though mine are easily the brightest), and I've gotten no complaints in the years I've had them. If any of my neighbors voiced concerns about them, I would try to work with them to find a solution. I have to live next to them, so it only makes sense to stay on good terms.
The whole concept of permanently lighting your garden is crazy! Where do you live that you're so worried about people hiding in your yard? Could you not solve that with cameras and an infra-red floodlight?