22 NAND blocks have failed, this can happen, especially if there are unexpected voltage drops (which happened 25 times here) while is being written or deleted. But there are still 61 reserve blocks and it is different with SSD than with HDDs, because with HDDs there is usually damage that then leads to further defective sectors and often soon to complete failures. With SSDs it is different, the cause of the failure of a block does not have to lead to the failure of other blocks.