The Astrolux MF01 was all but made for this. https://www.aliexpress.com/item/32976932742.html
After that, as a pedestrian I'd rather have a full beam to the face than think a car might not have seen me, even if I'm safely on the pavement.
This sounds suspiciously like "There Are No Bad Safety Measures"
How are you at risk from a driver not seeing you, if you aren't anywhere near the road?
If a driver has to travel that far off the roadway to reach you, that driver's issue isn't low visibility.
Occasionally (and in my experience it is only a handful of poor actors compared with the number of cars on the road), I'd take getting intense glare as a pedestrian if it works in everyone's safety.
Appreciate it's a different call for cyclists etc, but as a pedestrian I'd welcome the trade off more than drivers not using their full beams when they deem it neccessary.
Another term for "What It Could Be" is "What It Isn't".
Your comment implied that drivers who instinctively switch on their high beams to get a sense of a situation where they need more visual input are "jackwads" which I tried to highlight isn't the reason they're doing it.
Wanting to see more when you're driving a massive piece of machinery at decent speeds isn't something that makes you an outright asshole.
If they've blinded countless pedestrians over an extended period, then they aren't considering anything. Inconsiderate people are jackwads.
Disobeying traffic laws in order to be nice is tricky, especially if doing so has an remote possibility to cause an accident. The blame will always be on the driver.
We should be glad the kind of person who would go out of their way to endanger themselves and others with something as useless and petty as... retaliatory light flashing is on a bicycle instead of a 2 ton vehicle.
The people who give cyclists a bad name are never self-aware