Carb intake really comes down to your goals, activity level, and metabolic health rather than latitude being the primary driver that angle is more relevant to ancestral context than practical programming.
For most people focused on body composition and health optimization a good starting point is keeping carbs under 100-150g per day which puts you in a range where insulin stays relatively controlled without going full ketogenic. If you are sedentary or insulin resistant dropping closer to 50g or below accelerates fat loss and improves metabolic markers significantly. Active individuals or those doing heavy resistance training can tolerate more, somewhere in the 150-200g range, particularly timed around training. The cleanest approach is to get whatever carbs you do eat from whole food sources like fruit, honey, or white rice rather than processed garbage. As for faceiq their recommendations are usually built around mainstream dietary guidelines which are notoriously influenced by food industry lobbying not worth referencing for serious optimization.