The real estate requirements are real and if you don't have the space it simply won't work - but they are absolutely fine for text legibility. An important thing to remember is that, because you're viewing the reflection of the image instead of having a backlit screen, (outside of matte e-ink options) I've found it a lot less fatiguing on my vision than a traditional monitor. So, while I still prefer dark mode out of habit, even bright sections of the image for extended periods of time doesn't make my eyes sore in the same way. Lastly, as someone who wanders and dances while they work - it's much easier to keep focus on the screen as I migrate.

I'm sure it's not for everyone but it's an extremely comfortable way for me to code.