My 1983 house had only one GFCI receptacle, in the garage.

I first bought 3 more GFCIs to install in the backyard and the
bathroom, but I found that GFCI in the garage is the first receptacle
after a breaker and it is protecting the bath and backyard also (on
the same breaker).

So it seems I don't need to install extra GFCI receptacles. Or is
there still additional benefits to have GFCIs downstream?

Another concern is that the receptacle looks old is there any benefit
to replace it with one that is sold today? It's got no LED status or
anything; but the test button and reset works fine.

My other gripe tho is that it is on the front wall of the garage which
I'll be putting some cabinets over it soon, I guess I will have to cut
a hole incase I need to reset it in the future.