I remember an interview [1] with the Nanoleaf CEO (they switched to Thread over Matter years ahead of everyone else) about why Thread/Matter was so difficult, why everyone else didn't adopt it, and that they're going to wait for Thread to get better before they launch new products with it.

On the other hand, I believe all the major Thread Border Router manufacturers (Apple, Google, Amazon, Samsung) have updated their Thread routers or committed to updating their Thread routers to Thread v1.4, which is a pretty major upgrade.

[1] https://matter-smarthome.de/en/interview/nanoleaf-ceo-gimmy-...