For me, good, long lasting lume is a definite bonus. When I travel, I always wear a watch at night and being able to read the time - easily - is a big bonus. Some of the places I’ve been have no power or clocks, so a visible watch face is a bonus. As a result, my travel watches usually have decent lume... just in case.
I don’t often use a phone for telling time, particularly at night - scrambling around to find it (on my usually overcrowded bedside table) is a PITA compared to a quick glance at the wrist.
When I’m at home, I will admit that I have a digital clock in a visible spot, so lume is not really an issue. However I still leave the watch on the bedside table with the dial oriented so that I can read the time if I’m lying on that side. It’s all about minimising the chance of rousing myself to full wakefulness as it’s easier to get back to sleep.
So, back on topic,
I will say (and this is a generalisation) that CW’s lume (where applied) has improved year on year over the lifetime of the company. It’s not world class, but the lume on the newer watches are generally speaking, better than their older ones.