I get what Richfiles is saying, and I get Mabe. Starting with Low saves your night vision. Easy to say. I have also seen some people wish for the low mode to go lower, like 1 lumen, or even that's too high and they want .5 lumen.
I "get" that it saves your night vision and saves battery, and that self-identified "flashlight enthusiasts" seem to want to chase lower and higher extremes. But that doesn't excite me. There's enough light bleed from neighbors' porch lights bleeding in through my bedroom window that, combined with memory, I can stand up and walk to the bathroom without feeling around. I'd be halfway to the door by the time I fumbled on the nightstand for my flashlight and mustered the dopamine-reduced dexterity to twist a flash head or push a tiny tailcap button. No, where I need a flashlight is when I drop a MicroSD in a bus; I needed to overpower the twilight-level (probably 3 lumens) running light in the bus so that I had enough contrast to see the nail-sized chip wasn't on the floor, and move around everything in my backpack till I found the MicroSD card at the bottom of the pack under all the wires, plastic boxes, and underwear I had in there. Night vision moments are not the situation I need a flashlight at all, with the exception of working as an astronomer (I'm not) or if I'm reading a paper map or book as a car passenger (both of which I do on my phone these days anyway).
So, where I agree with Richfile, is it's annoying to have my least-used setting show up in the way before I can get to a practical amount of light. It's not that it takes too much time to switch modes, the annoyance is your first interaction is almost never what you want or need. And for me, I need somewhere between 15 and 20 lumens every day. I've gotta look at things like charger and headphone ports, I want directed light inside of packs, to see behind bookcases, entertainment centers, and computers, and maybe I'll wonder "what is that?" on the road or path. High mode lets me see further up the path, and illuminate a broader area at once.
Now, maybe the 5 lumen low of the Cree bulb in this drop is a bright enough low to do those close range things and have excellent battery runtime, in which case Low might actually be useful to me. But if it's perceptively as low as the low mode on my Olight i3s (my currently most used flashlight, despite having a beautiful Olight Baton Mini in brass), then it'll be my least used brightness and almost useless.