Another comment has a link to a Verge article that can probably explain it better than I can, but basically, Logitech initially announced the discontinuation of

Another comment has a link to a Verge article that can probably explain it better than I can, but basically, Logitech initially announced the discontinuation of Harmony Links, with the device being bricked post-March 2018 due to some certificate not being renewed. If you were out of warranty, the best they could do at the time was 35% off the new device. People got mad, media found out about it. Now they suddenly can replace everyone's no problem.