Really Silly question ...

[King_of_orchid_growing:)]

The pic you posted last is of that of a keiki.

Unless you pull the entire plant out of the pot and check, you cannot tell if the roots are fine.

Healthy living roots will resemble the ones that are growing along the cane (w/o the green pigmentation on the root tips, because the roots in the pot haven't been exposed to the light - yes, epiphytical orchids have roots that can photosynthesize).

Another factor could be temperature.