Earlier quoted context omitted.
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.
Milwaukee does offer a warranty and will repair out of warranty but any battery tool is by definition not a buy-it-for-life as the battery will wear out (and better tools will come). 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