"A disposable-tier combo with one surprisingly good ergonomic feature and many expected compromises."
The 'Ergonomic Curved Design' refers to a gentle wave in the key rows and, more notably, adjustable feet for negative tilt. It is not a true split or sculpted ergonomic board, but the tilt option is a legitimate, if basic, ergonomic feature.
This is for someone who needs the absolute cheapest wireless set for a quiet office, or a temporary setup. The adjustable negative tilt is a real, albeit lonely, reason to choose this over other generic combos if wrist angle is a primary concern on a minimal budget.
Anyone who types extensively and values tactile feedback should avoid this. The unbranded nature and lack of battery specs make it a gamble on reliability for a few dollars saved versus an entry-level set from a known brand like Logitech.