I only mentioned it as a warning it could happen, I have always had fluorescents as a main light, but also sited tools in front of the window, only once (when it was dark outside) have I tried grabbing a lathe chuck that looked stationary while it was turning, not something I want to repeat. that was why I suggested a desk lamp or similar, as an additional point of work light.
If it was an industrial workshop they would insist on at least 1 incandescent light as a precaution, but its not strictly necessary as long as you know it can happen.