Well I'd agree the size of these deals are far larger than any debt deals I can remember in the past 10 years.
But that has nothing to do with the scare tactic headline that says banks are trying tot offload debt. As I said this is exactly how banks work and how they treat all debt they underwrite.
I believe the implication is that if AI is really The Second Coming (or First Coming, if you prefer), then banks would want to keep the debt and the potential gains of said debt. Or rather, there should be an overwhelming demand for said debt.