Blue light only matters in a specific, narrow range. Most cheap commercial blue lights do not filter this part of the range, so they lie and say some unverifiable stuff about "eye strain" which itself is an unverifiable condition that people can work themselves into a tizzy over.

Remember being told low light would cause eye strain? Not real. Looking at stuff too close can cause some fatigue, which is managed by looking at something 20 feet away to get your eyes to flex. It has nothing to do with light hue or quality.