I would put anybody in a soft contact lens, if their vision is still good with glasses. If you’re seeing well with glasses, you will see about the same in soft contact lenses.
Even with mild cases of keratoconus and similar conditions, soft lenses may still work, though it’s not likely to give the patient the best vision or comfort. I may keep somebody like this in a soft lens if they’re completely intolerant of any other lens, or if they don’t want to try something new or they’re kind of married to the idea of a soft lens.