Oh yes, this shit is taken super-seriously when you're on parole/probation. The slightest infraction can get you arrested, whether it's being 10 minutes late, not filing a change of address/new phone number, not taking a scheduled drug test, not paying the parole fee (in some states you have to pay a monthly parole fee, it's not a huge amount but still, it's something else you have to do, month after month, year after year), not staying away from known felons...It's a lot.
Is it fair? It might go overboard, but OTOH you are getting out of a prison sentence or getting out of prison early, and telling the courts that they can trust you, so if you're smart you'll suck it up and fly right.
Some convicts actually refuse to take parole, they prefer to just finish their sentences so that they're actually free when they get out. They'd rather work hard to get their sentence reduced on good behavior and have no parole burden when they're released.