Without question they can and do and to say ( as an absolute) they "cannot' be reused is not supported by the facts in evidence.But the point is, o-rings do go 200k and 10 years on a regular basis so the thought that an oil filter re-seal cannot is just plain absurd.
I don't know that many argue against that ( hope not anyway)
That's where the risk comes in. Different potentials for different things.I don't see where there is this potential for damage unless your banging the seal face against a sharp object upon removal.
But at the end of the day its an individual decision and the odds are in favor of a reuse performing well.