If you think on that brownish color around the base ?.... It is natural process called corking. :)

And!! if both plants are creating offshoots it means that it could not be dry roots, for sure. With dry roots cactus CAN flower, but CAN'T create offshoots! And on the other hand, if the roots are rotten, they would stop growing. But both are growing and shining, have that healthy aura around themselves.

Only flaw that I noticed is few spots left by thrips on E. triglochidiatus, but they are not dangerous, and I think they are gone now. I am not using insecticide for that.