I like the phrase appropriate technology if you are shooting action sports thats most likely a DSLR you want to do the best you can with a landscape thats a 10x8.
That said the 10x8 will not be many peoples choice because of the logistics of dragging it about and the pecieved cost amungst other things.
What people choose to use should hopefully be what suits them best or what they can afford.
Most people it seems do not look beyond 35mm and the digitail equivalent, personally for me I do not see the point of 35mm the convienance of a DSLR that will give me good results up to an A3+ sized print as compared to what you have to do to get a good 10x8 35mm print just makes 35mm not worth the effort.
I do not have experience of medium format digitail setups I can not afford the expense as an amuteur however for me what you can do easilly with medium format film does not mean I use it often.
By the time you get to large format if you are using it for appropriate subjects it is easy relatively speaking to get good results.
The difficult for most people in obtaining good results with film is the scanning typically most people are trying to scan with prosumer flat bed scanners that have a max real resolution of about 2000dpi which is ok for larger formats but lacking for 35mm.
I mention scanning specifically as for reversal film there is no real alternative now and I believe for colour negative materail the majority of printing is based on lightjet technology.
Tim Parkin did an interesting camera comparrison in 2011
Note no 35mm tested
For me film makes sense shooting landscapes a 10x8 Drum Scanned at 1600dpi gives me a 40" pin sharp print I can aford the film gear but no chance could I afford medium format digitail.
For the record Sinar 10x8 secondhand 495 + VAT
Screen DTS 1045AI 8000dpi drum scanner 250 buy it now
hp Z3100 44" Ps 1000 auction
All less than a seconhand D600 cost me though addmitadely not together
Crash your browser on a 10x8