I flatly disagree with this. Apple's user experience, and the premium the company puts on it for each of their products, is second to none in most respects.
That does not mean that everyone is going to be pleased, because that'll happen every time someone doesn't get what they wished for.
For example, the majority of posts I see here that are upset with and/or disappointed with iPadOS 15 are folks who want to turn the iPad into a Mac.
The iPad user experience has not changed (for the worse, that is).
People expected Apple to give them MORE on the software-side, because Apple gave them MORE on the hardware side (for no extra cost, I might add).
When that expectation was not met, Apple "sucks".
The M1 iPad is OBJECTIVELY the best iPad we've ever had, and iPadOS 15 makes it even better.