I read your initial query and I read through your meta query. Frankly, I've heard of those things, but don't know how they might fit together, so I am actually quite eager to see some good answers to your questions!
You opened the door re snarkiness, so I'm just going to offer a friendly bit of advice, and that is, please don't lower yourself that way! It's just not needed here!
As for reopening, I see it's already got one reopen vote, and the question doesn't appear to be edited at all. If it's not your own vote, why are you complaining about the mods? Opening and closing of queries is a community task, not a moderator task.
The Meat & Potatoes
As for why your query should remain closed: I should think that would be patently obvious. You're asking at least four different questions. At least one of those questions remains overly broad. You've even bolded and numbered the other three of them for us! If you are so familiar with asking questions elsewhere in SE, why would you think it's any different here?
I don't like the fact that there is no discussion forum attached to WB.SE (because I think this would be a hopping geopoetical forum if there were)! I personally don't like the strictures, and I personally agree with you in so far as at least certain standards ought to be laxer here because of the material we deal with. However, I concur with the SE model that we all have to deal with, which as you know very well, is one focused query gets on point responses for you to consider.
So, what's the solution?
That's easy! Get off your keister, stop complaining and edit your questions to fit the model, just like everyone else is supposed to do!
- What would the consequences of Cold Fusion, Quantum Computing and Room Temperature Superconductors (be) --- this is your basic, underlying query. It is too broad. Narrow it by focusing on a particular worldbuilding problem, like "What would the consequences of Cold Fusion, Quantum Computing and Room Temperature Superconductors be on XYzed materials manufacturing?"
- Is this a valid assumption? --- This is a fair question. It deserves to be its own question. Make it so!
- Any sci-fi idea of what that may be? --- This is a fair question, but it is too broad, because you're asking for a list, which as you well know is a no-no. Maybe turn it around on its head: "What RealScience or SF breakthrough in Quantum Thermodynamics as we know it must have been achieved that might lead to making room-temperature-superconductors?" It too deserves to be its own question. Make it so!
- Am I correct to assume that? --- This is a fair question, but does not deserve to be an independent query. This is simply a "correct me if I'm wrong" kind of question. Fix this by prepending that phrase to your assumption thus: "As for the new techs that would soon emerge, and correct me if I'm wrong, but I have a feeling that ab-initio Chemistry..."
Some Final Notes
WB.SE does not impose any kind of rationing scheme on its members. You are welcome to ask as many queries about your universes, worlds, and settings as you'd like! There's just one caveat: you can only ask one at a time!
Since you pointed out that other question, yes I voted to close it and for the same exact reason yours was closed: lack of focus d/t there being too many questions. (And as of the time of this edit, it's been closed, and is now awaiting the same kind of focus editing yours is awaiting!)
Honestly, I just don't understand why querents can't seem to grasp the simple idea that they can ask only one question at a time AND they can ask multiple questions about the same problem!
This is not rocket science.
Keeping that in mind, as you edit & rearrange your original query, try to keep them linked together so folks can follow the progression!