PPete2
This trail is a mountain hiking trail with some ropes for safeguarding and some short ladder passages. There are hundreds of these kind of trails in Austria and definately a not a Via ferrata. No need to wear Via ferrate equipment - just hiking boots.

It's always sad if accidents happen, but they also can happen on flat walking ways if people stumble over a root or stone and fell down with bad luck.

If you want to discuss the tagging of such hiking paths in Austria in general, please do it in the appropriate way by opening a thread in Austria's OSM mailing list:
 https://lists.openstreetmap.org/listinfo/talk-at
or forum https://forum.openstreetmap.org/viewforum.php?id=89
