Some Aloe will regularly get brown leaf tips even with good care. It can be minimized to some degree by growing the plants in well-drained soil and giving them supplemental water during dry periods, which is more than half the year where I live. Sunlight itself is not a factor, as most Aloe are well-adapted to full sun conditions. I grow many Aloe in full sun with nary a leaf blemish.
Also there is no need or benefit to removing flowers from Aloe or most other plants. Their presence will not significantly impede the growth or health of the plant. Really, it does seem perverse to remove one of the most ornamental features from a plant largely grown for ornament. More importantly, your neighborhood hummingbirds (or sunbirds, honeyeaters, honeycreepers, etc.) will greatly appreciate having some lunch to eat.