My view on this is simple . Had a manifold of manifolds and run a pipe to every outlet . My backs (expletive deleted)ed so I can think of nothing worse to getting under a sink etc. to isolate it . It costs more in pipework ( but less in fittings if you just let the pipe ‘ go where it wants ‘ .
For me to isolate in 1 place is fantastic - and I use this facility easily .
I’ve just added an outdoor sink and broke my own rule ; branched off the kitchen hot and cold - it just wasn’t worth the effort of 2 new feeds .
So in hindsight; an ensuite for example could just be 1 hot / cold feed rather than be a feed for each outlet I suppose . I guess it depends as well if you are living on a building site ( like I am ) ; the convenience of isolating each thing is great .