I don't know, people have been lamenting the poor quality of Apple software and how much better it was in the old days since I got my first Mac in 2007, at least that's when I became aware of the complaints. If it was really on a substantial continual down trend from then, by now nothing would work at all. Apple continues to invest massively in software, that means a ton of new code, which means a ton of new bugs. You can't develop new software and not have quality issues.
Apple continues to make extremely long term highly strategic investments. You don't get to develop a highly original, industry leading SOC architecture without long term investment in technology. Bankrolling new process node development and thereby locking in capacity in strategic contracts doesn't happen by accident or on a whim. Development and implementation of the Apple watch happened entirely in the post-Jobs era.
So I just don't see it, they continue to commit to heavy long term investment in capital intensive technology projects and innovative new products. Not everything works out. The touch bar and butterfly keyboards were notable misses. But then that's always been true. I look at the phones, desktops, laptops, watch, Airpods, iPads, etc. They're the most Apple-y products Apple has ever produced, and not a single one of them is a me-to product slapped together to ride a trend.