Yes, that’s an important point. My D was advised not to use it long term. Many of the treatments for serious acne have side effects that must be carefully monitored - my S actually had to stop accutane for six months right after he began on it because of a health concern (he was put on a lower dose and slowly ramped up when he started again).
As those of us who had very bad acne or who have kids who had very bad acne can attest, it is not a trivial thing. The side effects of treatment need to be weighed against the psychological effects of not properly treating it. And as with the topic of another thread, osteoporosis, the decision is personal and varies from individual to individual.