Apple is a very different company today than it was in 2011. I don't think that is necessarily due to Jobs' death though...the company would have still evolved had he remained CEO. These are technology companies where everything changes and you either change with it or you go out of business. For that matter, it seems like sometimes it is easy to think everything was perfect at Apple during Jobs' tenure and now everything is crap...but that wasn't the case. OS X had issues back then, as did iOS, and there was occasionally systematically defective hardware...and Apple (and Jobs) didn't always deal with it very well. But, then, like today, I still think they get it right more often then they get it wrong, and the company overall tends to do well by their customers.
Also, not only is Apple more diversified in their product lineup, but Apple devices are way more complex than they were a decade ago. My iPhone 4S was a great phone, but it was a simple device compared to what we have today. I don't know the lines of code difference, but I would assume the testing burden with modern devices are many times that of older devices, even though consumers expect release dates for new hardware to remain on a 1 year-ish release cycle. Also, devices today have to interact with way more third parties than they did a decade+ ago, necessitating a different structure to testing, bug reporting, and troubleshooting. Simultaneously, we've found ourselves in a situation over the last few years where the world itself is very different, throwing a wrench into the mix.
Finally, as I am finding myself, one very major source of frustration is the transition from LTE to 5G, which is something Apple has limited control over.
In terms of Apple's priority about bottom line, they've always been about making money...that doesn't have to run counter to delivering good products or services to your customers. To the contrary, if you deliver crap, in most cases your revenue stream dries up.
Siri still kind of sucks. Not sure what's been happening there.