"I do not know the protocol or if local climbers generally take care of replacing anchors"

The Preserve inspects & maintains the bolted anchors, the rest is subject to the whims of climbers. People like anchors, they build them. People don't like anchors, they chop them. People think anchors are dangerous, they replace them.

Thanks for posting the Sixish situation. The sagacity of such anchor being in place is questionable, but if it stands it should at least be safe and pretty - equalized software and all.