I agree with this, save with the word “usually”.
Really? Fined by whom? The carpet police? Leases are contracts, breach of which entitles the wronged party to claim damages from the counterparty, in this case the landlord. Unless the landlord has a contractual right to levy fines on the other tenant in the lease between the landlord and the other tenant, I cannot see where the power to fine would arise. Even if such a power existed, it is likely to be unenforceable as a penalty clause, given it bears no relationship to the landlord’s cost or to the wronged tenant‘s loss.