Analog film photography and cameras

SLRs are not just bulkier, nosier, slower (slower to compose, focus, expose and advance) but also tend to demand a less fluid style and better lighting.

What? Why?

Without a mirror swinging about one can learn to shoot rather slow speeds.

Huh?

One can easily focus in much lower light on a rangefinder than an SLR.

Really don't think so.

Thanks for your input on the Rockwell alternatives,
but to be honest I disagree with pretty much everything you said about SLR vs. rangefinder.