These torches are OK.
I have one I bought when waiting for a replacement brazing torch
which runs on propane and bellows. My brazing torch has a pilot light
so I only light it once a day.
The EZ torch has three tips. To anneal, and going fast and annealing
is wrong going gentle and annealing is right, get a gentle flame with
the big tip and slowly paint the metal to annealing colour. There is
an adjustment knob on the back of the torch.
It ain’t rocket science.
Hope this helps