Hey there. So as long as the cuttings are coming from a stable parent they should be perfectly identical and stable and the mother. You can also dip your cuttings to ensure they aren't infected or hiding bugs. So as long as you keep pulling from healthy plants you'll have healthy clones.✌️ often a facility acquires most of their pests from not caring for clones properly, and then they'll have much bigger problems to tackle as time goes on.

the only issue is if you clone from a sick plant the clone could never recover.

This is not like taking a photocopy of a photocopy. You can keep taking clones as much as you want and will probably get bored of the strain at some point