- displaying a white background image of text when I'm using dark mode;
- using a small font to a user with a visual imparement or on a high DPI display;
- using a colour scheme with low contrast, or colours that are indistinguishable for people with a form of colour blindness;
- using a font that is difficult to read for someone with dislexia;
- etc.
And others have mentioned not being able to search for the text within the image, or select/highlight the text (useful for copying a function name, link, or term in the text, or for keeping track of where you are when reading).
I'm biased, but I can't help but feel like chances are, if the screenshot is text, the content of the text is important, not the visual aspects.
99% of the time I get a screenshot these days, it's people sending me screenshots of text logs or code, and almost always cropped in a way that eliminates any context anyway. Give me plain text or give me death.
Columns actually aligning in columns? Indentation being preserved? Lines not getting interrupted with overflowing previous lines?
When I send a screenshot, it's precisely because the visual aspects do matter. (Obviously, when they don't, then I just send the text.)
In some cases visuals are important, and in other cases, they're not. Hence why I said "chances are" and declared my bias rather than using absolutist language. However, somewhat ironically, you chopped off that part of my reply. I find it odd you chose to respond the way you did, but I digress.
I also carefully indicated my every day interactions with screenshots do not align with those requirements.
Of course there are situations where visual aspects are critical. I'm not disputing that. I'm stating my _preferences_ and my _opinion_ that situation is exceptional.