Certainly there isn't a monopoly on quality that is attached to one way of working in particular. Neither is there one attached to the technology upon which a tool is based per see. In analog and digital designs, it is the way in which a designer chooses to implement his ideas that will ultimately put a limit to the quality of results attainable with those tools. There is no such thing as bad technology, only badly implemented technology. However, certain types of designs tend to be easier (often from a costs versus results point of view) to implement competently in the analog world and some others in the digital one.
Unfortunately, what drives the development (in audio like most other areas) of most things digital at the present time is mainly an issue of costs OVER quality of results.
A person that has the good fortune of being in a position to listen to and evaluate top notch analog and digital audio equipment alongside, will probably come to the conclusion that there are definite areas where, at the present time, the best of digital doesn't seem to be able to compete with the best that analog has to offer. (I think this is definitely the case in the area of good compression and, to a lesser degree, in equalisation, distortion and multitrack summing systems.) Of course, there are certain types of signal processing that can't even be properly implemented in the analog domain. (The area of audio restoration springs to mind here.)
Our reality as users though will ever be one of choosing the best, most effective and easiest to use tool that is available to us for the budget that we dispose of. Right now, in the lower operating costs cross-section of the market that most of us are living in, this is often a digital piece of equipment.
I am a digital user mainly as I mostly work in my ProControl-PT HD/Performer studio which is, however, well suplemented by as much analog equipment I can afford in those areas I found my digital system to be too lacking. Did I choose PT on the premise of absolute audio quality? Hell no!
This is, it seems, the best compromise setup I could reallistically afford in my market. And it has given me the ability to achieve a surprisingly high standard of quality in my productions. Why? Because of all the time i can invest on a project working on the songs and their instrumental and vocal parts and getting great performances. All the time I can take to optimize miking (and experiment to find cool textures!) and tone separation while recording. And let's not forget all the time I can work on bettering my ability to pull off a balanced, effective and song-serving mix.
I had the chance to start working in a couple of nice all analog rooms when I started some (ahem... so many already!?!) years ago. When I listen to my early works, I'm always amazed at the well defined roundness of the bottom and the softness of the top. The depth-of-field of the soundstage and the general effortless quality of the sound. I can assure you this is not due to me classifying as anything near half-competent. At the same time, I can't figure for the better of me the weird mix balances decisions, general mumbo-jumbo of the arrangements and total lack of intelligent sculpting of the so-critical mid-frequencies spectrum.
So instead of moaning and flaming and preaching, I'll work on improving my skills and, hopefully, my client base will continue to grow and enable me to continually improve the tools I use, be they analog or digital...