No fuse, no way

Why would I want a whole circuit to be cut because of a single device fault, and then have to spend time figuring out which device on that circuit actually has the fault.

Plus if a device only needs 3A it shouldn't be able to draw more

Which are only necessary because British houses are wired with a ring main. It’s a false economy.

Also, when it was created, most appliances were earthed. Nowadays, most things one plugs in are small electronic devices which don’t need an earth. Type G/BS1363 has no 2-pin variant, and even mandates a mechanical shutter to prevent a plug without an earth pin from being used. Which was great in 1947, but not so much now, when Europeans, Americans, Japanese, Australians and such have slender 2-pin plugs and economical sockets to put them in, while the Brits/Irish/HK/UAE are stuck with their enormous clownshoe of a plug.

GFCI will save people from direct shock , but won't always stop a fault from say starting a fire. Example a damaged wire arcing the live and neutral (not a dead short) won't trip gfci, there is no ground fault because the power is returning over the neutral as it should. And since it's just a partial arc short it's not going to draw enough to trip the main breaker so it can just sit there and get hot and catch fire.

Technically we now have AFCI to try and detect exactly that, but it's still relatively recent and generally very expensive to implement.

All that said, I prefer the g-type outlet simply because of the giant plug ensures a nice, proper, secure connection, and isn't shaped in a way that lends itself to being particularly damaged. Even if something lands on it, it's profile prevents it from being ripped out of the socket. Whereas the other socket types tend to stick out quite far from their socket and have a tendency towards being yanked out of it. Obviously I'm partially overreacting because I'm dealing with the absolutely fucking garbage type B Outlet I just want an outlet that will finally stay secure