If you have a large electrical storm rolling through, probably a good idea to unplug your amplifiers and components.
And I do but honestly I can’t be here or be aware of all of them in advance.
I work with 3 retired Power Company employees, they say that whole house surge protecters are a joke and that they don’t work. The company makes it so hard to file a claim, they they almost never have to pay. These are not linemen, but management.
The fine print in the warranty make filing a claim very difficult unless there is visible proof of a surge, which there often is not, or at least not one most of us could detect. Honestly I never really think of the claimed damage coverage when I buy new units. I focus on the technology and what I’m protecting.
If they sold the WHSP as protecting the TV then yeah, those things wouldn't work.
True, some devices work much better than others, so caveat emptor!