Shower Bar gong show

After years of my cajoling my husband had a burst of ambition and had to immediately mount the shower slide bar without consultation (if I don't specify precisely it gets done wrong and I know that sounds petulant, but I've had too many gong show situations).  So, while I'm at the grocery store he mounted the shower slide bar in the walk in shower ***at floor level*** because I said I'd also use that shower for the dog.  Did he think the dog was going to adjust the shower arm?  I don't know what to think, to me this is a human who Darwinian principles dictate should not have survived past adolescence, but society and me have somehow managed to keep him alive through no small effort.