Right, but the point gp made was that large scale blanket pardons make a single individual the arbiter of law. That's true. (if you want a less charged example, instead imagine the president pardons everyone convicted on fraud charges).

That power can then be used justly or unjustly. The constitutional balance for this is impeachment, but it's not clear that would work in practice or theory.

I read the statement as "consider an alternative" or "consider this alternative". With this reading, the line of reasoning implied is correct and relevant.

Typos happen (and this is an international community including people unfamiliar with some idioms). Obviously the alternative presented isn't THE alternative.