Bow kites, like C kites, are as safe as, the person on the end of the lines

If you treat them with respectt and dilligence, and follow the safety rules, all OK.
If not, you may get e.g. tangled lines trough the bridles, and end up with 4 - 5 months out of the water

Kitesurfing, it does not matter the equipment and brands you use, it is as dangerous and extreme, as you make it

Cheers