Husires pointed out Japanese fiat depreciating against the USD, but the chart is for a specific point in time, largely for 2022. The op, on the other hand, is talking about a record high price over the last two weeks. That being said, I've found an
article about the event (which was 2 days ago, by the way), and it does mention the record high price coinciding with a decrease of value against major fiat currencies.
I also wonder how big of a difference we're talking about, as the op's talking about a 25% increase over the last 2 weeks, which isn't very far from around 23.5% increase that happened if we measure Bitcoin vs the USD.