I have quite different observations. IKEA's Zigbee devices are the least stable devices I own and with smaller feature set.
For example, I have more than a dozen Zigbee smart outlet around my home, and the IKEA one is the only one that ever hang and became uncontrollable, yet its also the only one without a physical button to toggle and without power monitoring.
One of IKEA's Zigbee remote controls I have also regularly drops connection and I have to remove its battery to reset it from time to time.
The ones I bought from AliExpress of unknown brands are, unfortunately, much cheaper, have more functionalities, and more reliable.
For example, I have more than a dozen Zigbee smart outlet around my home, and the IKEA one is the only one that ever hang and became uncontrollable, yet its also the only one without a physical button to toggle and without power monitoring.
One of IKEA's Zigbee remote controls I have also regularly drops connection and I have to remove its battery to reset it from time to time.
The ones I bought from AliExpress of unknown brands are, unfortunately, much cheaper, have more functionalities, and more reliable.