> what options does this kind of hobbyist have?
A digital SLR.
They are not as good as they could be because, as the article observes, the manufacturers have focused on low cost rather than high performance, but even a modest dSLR is still head and shoulders above anything any cellphone can produce.
The author is a medium format enthusiast. For good and bad medium format enthusiasts have always been the "linux crowd" of photography.