Radial arm saws vanished because they were a compromise solution that slider miters made inferior. They are pretty safe as the blade is constrained to travel along the arm for cross cuts and for rips is locked in place. The usual problem is simply stalling the saw. Rip cuts can definitely kick back if you don’t take the time to set them up right including the guard and anti kickback device. They can do it all, cross cut, compound miter, rip, dado. There were some sketchy shaping attachments I’d be hesitant to use. But the main problem is they are large as a big table saw and the changeover time. A table saw and sliding miter is the way to go now. But I still own a radial and if I had the space in my shop would set it up Norm Abram style.