And the tools they’re listing, Milwaukee Hammer Drill, for example, offers no warranty at all and wouldn’t be what I would consider to be “high end” either. Just seems like a purposely placed product rather than a legitimate BIFL item.
My rule is buy so that when it dies I’m not sad. That varies for different pieces of equipment.
Fortunately, you can buy batteries for most popular tool brands long after the brand stops supporting them, and in a pinch you can buy adapters to make brand a batteries work on brand b tools
Milwaukee continues to sell batteries for their far outdated NiCAD.