Is PoA private Ethereum a fault tolerant platform?

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As mentioned here:
https://solulab.medium.com/hyperledger-fabric-on-blockchain-technology-what-are-the-advantages-and-disadvantages-43fffc6a27fe
by SoluLab, HyperLedger Fabric is not a fault tolerant network. Is that true? What about a private Ethereum that is live on Proof-of-Authority (PoA) protocol? My mean of fault tolerant is this:
https://en.wikipedia.org/wiki/Fault_tolerance