Not really. The problem used to be the prevlanence of high power devices like three bar electric fires around, and those should almost always be plugged directly into a power sockets. That's combined with the fact that old cube style adaptors were rarely fused, so the only indication of an overload was usually the adaptor melting and dropping off the wall. These days, the most common high power device still in use is the vacuum cleaner, and those should always be plugged directly into a wall socket, and maybe some of these fancy fan contraptions that include a heating element could need a lot of power, I'm not sure, but for everything else, a couple at amps at 230V is about half a kilowatt so plenty of power for their needs, and putting four of those in an adaptor is still only 10A, so suitable for most sockets. Assuming it's all fused appropriately the worst that can happen is a fuse pops when you weren't expecting it and the power disappearing, but that's for your safety so you shouldn't really complain, and be taught a lesson.I would say the issue is that you shouldnd run multiple devices from one Wallplug, the ideal case would be to have one Wallplug per device..
You named the errors but you did not mention the words "Photoshop" or "GIMP".According to the orientation of the holes, the adapter would be vertical and not horizontal.
In the second image they aren't using the same plugs in the before and after pictures, probably because the 45° angle would have them look weird, plus I'm not sure the last fat plug would leave enough space to plug something next to it.
I usually replace the fuses in my adaptors for their intended use. Usually a 5A for a 2 gang apaptor and 10A for a 4-way one.It would be surprising to find an extension lead not rated for and fused at 13A in the UK.
Yes, for 3A and 5A (as well as 13A). But 1s, 7s and 10s you need to go to a proper old school electronics shoppe.lower-rated fuses can be bought at any good supermarket.