[nkristoffersen]

What makes you say that?

I can definitely argue that mirrorless is always better for most users! Thinner bodies, modern lens selection (so faster autofocus and wider aperture, etc), real-time image previews, better low-light preview (in both rear and viewfinder screens), video recording capabilities better match professional video cameras (by removing mirror complexity) which better matches the hybrid needs of the modern camera buyer.

[64operator]

It had to be said, it's true. Mirrorless camera displays give off light, the screen is brighter than ambient light. It's can't get dim enough preserve night vision if you're using a telescope for instance. You can shoot in very low light with the high ISO speeds available on a modern camera but if you ruin your night vision you lose awareness of everything but what you're shown in the finder, just in general. I'm sure you can think of others.