That work was all done without this new evidence. New evidence might reinforce old conclusions, or undermine them. Nobody knows without the work having been done.

Comparing scripts is the only way to identify similarities and differences. We can be confident Korean is not an influence just on geographic grounds, but all Mediterranean scripts are in play, because whoever started using runes could have been exposed to any or all of them.

You may say nobody can prove a negative, but cocksure deniers are fairly swarming out of the woodwork, here.