Yeah not sure of that. Metallica still play sold out stadiums everywhere they go, and they've toured more that most bands in music history, including the last 25 years. They might not get radio airplay anymore but they have certainly not been forgotten by fans when it comes time to play a show in their hometown.
RIP to Taylor Hawkins, I haven't heard a heap of their music but There Is Nothing Left To Lose always get a regular spin from me. That's a pretty bloody good album👍. He seemed like a pretty laid back, likeable guy. Rock star life seems like the perfect job from the outside but it pretty clear it isn't in reality. A great many awesome musicians get lost in that life and end in an early demise. I guess it's like any job, after a while it'd be very monotonous and draining: especially for guys with a family.
Probably my favourite of their songs