Are they really? I have been debating if to get some but I have read in quite a few places[1] that they are not really useful and so I'm really wondering how much is truth and how much is marketing.
they might be bogus -- mine clearly reflect blue light when I see myself in a Zoom call, and they make ambient light warmer as well, so yours might just not be filtering properly. i think there are a lot of cheap products that don't really do what is advertised in this area.
Interesting, I notice the change in color when I wear mine. It's not dramatic but it is definitely there. When I forget to take them off, and realize it, the change in colors is very obvious when I finally take them off.
I've seen those reports as well. I think it will depend on the person, and just because blue light doesn't cause eye disease or not enough studies have been done to test how valid it is does not mean it is not working for some people. It has certainly made a difference to me and several others I know. Just make sure it is genuinely blocking blue light; as I mentioned in another comment, some of these don't actually do what they are advertised to do.
Like the GP I had serious eye-strain issues that caused headaches and photosensitivity. The new glasses eliminated the issues almost entirely.
I am not 100% sure though if this is caused by the filter or by my previous pair being really bad.