For commuting I personaly would not want a bright light on my head through concern of blinding drivers and instead would have some thing that would just get me seen.
I have a pretty focused XML torch, which with a wee bit of tape packing fits nicely into a joystick mount. Not good for offroad, it’s too tight beamed and the weight’s too high so it flops your helmet round, but on the road it’s fine. I aim it below my eyeline, because mostly I don’t want to glare drivers- but when you see some ringpiece is setting up to pull out of a junction on you, being able to laserbeam them is an asset, they stop dead every time.
My uncharitable suspicion is drivers see the bright light and think you’re a motorbike- everyone knows it’s fine to pull out in front of cyclists but a motorbike’ll mess up your car, and have an insurance company behind it. Either that, or they think you’re a UFO.