That's generally true of any change that Apple makes. They telegraph the change directly, yet it's largely ignored, usually wilfully, and the caterwauling starts as soon as they take the action that they say they are going to take. Take the M-series transition. When M1 was announced (mid 2020), Cook said that they expected to complete the transition in 2 years. If you have a pre-2020 mac, expect the next macOS to be the last.