securing wire rope at right angles

[njl]

I'm still hoping someone might be able to answer these two questions:

1. If synthetic seizing line is easier to work with than seizing wire, and considering the strength of dyneema seizing line, when/why would a person opt for using wire seizings for wire rope?

2. Hypothetically, if you parcel/serve/slush a section of stainless steel wire, is there an issue with oxygen starvation?