Easy to avoid on Macs. Harder on phones for non-technical types. The bigger issue with Apple is I think getting data out of iCloud should you want to do something else. Their proprietary formats and databases (especially for photos) is kind of a nightmare.
Examples? Not at all my experience. I love my Linux boxes but every MacBook I’ve owned has lasted 10 years and generally is quick until near the end of that period. My iPhones have also all lasted longer than my Android phones with considerably more updates and security patches (supposedly this will be more on par now if Google doesn’t cancel yet another program).
Not really if you actually try to match the screen too. Good colour accuracy is expensive. It’s the best part of their products. If someone doesn’t need that then yeah, definitely better options.