8m_zk, any device that has internet access (in this case Ledger HW), should not be considered a cold crypto wallet. If you want a real cold wallet, you will need two devices, one of which must always be offline - see how it looks in the example of Electrum.


One backup also represents a security risk, especially if it is on paper. At least two copies in different locations if possible is a much better solution, and in addition to paper the seed can be engraved in a metal plate which provides protection from fire, water or some other unfortunate circumstances.