-And yet I know plenty of Fallout 1 and 2 fans that didn't care, or think it was lore breaking, that the BoS went east to either Chicago or D.C. Furthermore, Tim Cain says in the video you linked that he personally wouldn't have used many of the same elements, not that re-using the things they did somehow violates the intended meaning of their existence, beyond the specifically named FEV, and even then he says it was a stretch, not an impossibility, or complete violation. So again [citation needed].
-Yes, though they are called lakelurks instead of mirelurks
http://fallout.wikia.com/wiki/Lakelurk
They can be found in Lake Mead, specifically on the Scavenger Platform, and they can also be found at Ruby Hill Mine, Blue Paradise Vacation Rentals, outside the Cap Counterfeiting Shack, Camp Guardians Tunnels, and one unmarked location often referred to as Lakelurk Cove.
-Except it would be an RPG, as per many people's definition, and as per the fact many people already see most RPGs that way to begin with, regardless of if it is specifically stated to be that way or not by the developers.
-By that logic one should never be allowed to manually level up a character skills, be it by "learn by doing", or by putting skill points into it, they should just get automatic boosts to whatever their pre-programmed favorite skills are, as the character would always chose what he/she want's to get better at. Also, no RPG starts off with the character being competent in anything, even with TAG skills, or other similar starting bonuses in other games, the skill number is so low there's no real way they could have survived with those, that's part of it being a GAME, something focused on starting off at nothing, and progressing over time, rather then a simulation, which wold start you off at a whatever logically developed point the character would be skill wise.
-That is an incredibly narrow minded take on human action, and suggests people never try to do anything outside of their specific skill set, which they do, all the time. And by that logic, why should the player be tormented with other mundane things like shooting, or talking to NPCs, or anything that defines gameplay in an RPG? Why shouldn't the characters just BE doing the things they want to? Because at that point it stops being a game and turns into a movie, which games are not.
Leveling by natural use is not grind. Grind is specifically going out, without a purpose such as a quest or mission, and doing things in order to gain EXP to level up. Getting a higher one-handed skill by killing things while doing quests does not qualify as grinding, grinding would be just going out into the wilderness, and just killing sabrecats over and over to level your one handed skill, without any mission telling you to do so.
And I end up having to do that in Fallout 3/NV far more then in Skyrim, in which I never have to do it, mostly because of Fallout 3/NV's idiotic, and unrealistic, "YOU CANT EVEN TRY!" type skill check systems. Though Fallout 3 was slightly more bearable in regards to speech checks, as it used a far more natural and realistic % based system, rather then an arbitrary and unrealistic binary pass/fail system.