Is that goof piloting or good programming though?
Not programming or autoland, but rather good old fashion hand-flying with a little luck thrown in for good measure.
How automated are most landings?
Virtually all are hand-flown landings.
Is it true that the plane can pretty much "land itself"?
Most planes today are built with autoland capability, but the airline, aircraft, pilots, airport and runway all have to have the capability and have it in use so there are actually pretty few places that perform autolands on a regular basis. Some of the newer planes (and some older ones being retrofitted) now come with Head-Up Display [HUD] for low visibility landings. A HUD landing is a hand-flown approach/landing and is becoming popular due to its (supposedly) lower operational & maintenance costs.
Do pilots just select how fast they want to stop the plane and the plane takes care of the rest, applying brakes and reverse thrust automatically?
I know of no automatic reverse thrust function on any airliner. Automatic brakes are a regular feature for the vast majority of airliners today.
In (very) bad weather, most operators require pilots to use autoland.
Depends upon what you define as "bad weather." Autoland [or HUD] is for low visibility
conditions only. Autoland has much tighter limitations on when it is permitted to be used than any standard instrument approach.
In my oppinion and experience, bigger aircrafts always (or most of the times) land more softly than smaller onces. Would there be a explanation to this?
Sure, just apply a little physics. Larger mass already in motion, etc. Add in all the additional equipment and your (probably) much greater distance from the actual runway surface point-of-contact and your "experience" will appear to match your opinion.
OTOH, those of us sitting in the pointy end will be cussing out our "horrible" landing (the same one you just praised so readily). Ignorance is bliss.....and a good pilot is never satisfied with less than perfection.
it's how to get to the gate in zero viz after rolling out.
...and very slowly. Once took me 20 minutes just to find the terminal at KSNA!