I'm not surprised. While (as I stated elsewhere on this thread) I generally like Logitech stuff, they don't generally make stuff you upgrade. They make stuff you use until it fails and you need to replace it. Very few people outside of gamers will always want the latest Headset, Mouse, Trackball or Keyboard. If what they have works, they are generally happy. They've also had a massive increase in sales in the past two years because of WFH and Covid. That was never going to last. Either people stop WFH (and a lot seem to be, certainly in London), or they have their kit and aren't going to need to replace it for a while.
I think that last bit is actually a massive problem for the PC industry as a whole, not just Logitech.