I'd say Amazon L6 is a good bar of what senior used to mean. Many newer (or older) companies lowered the bar to try and make people join them because dumb young people sometimes want the ego of a title rather than purely looking at the company's trajectory and compensation packages. In a way either intentionally or unintentionally there tends to be more tiers in the lower ranges of companies now, which can be a good thing for progress?

A lot of intermediates used to be stuck in this limbo zone, but some companies entry level "senior" now is basically what high-band intermediate used to mean. Worst case - paid the same, more ego. Best case - the pay band start to cross over to higher realms without going that far into the "hardcore senior" zone.