"Do folks in here are really that needy of self-validation, even if it means seeking such from something completely insignificant like internet points?"
But... is that not exactly the description of somebody who complains about downvotes?? As said by others; they should be considered exactly as valid as upvotes. If you feel like they prohibit you from voicing an opinion, I personally feel like that is a you-problem. Ask yourself of the content you posted is crap, if you feel it is not, simply ignore the downvotes and move on, they are just pixels.
Edit: I checked your posts, most downvoted ones seem to be clickbaity or images that you posted to the linux community. This is not something that vibes with that type of community, I would have downvoted that too. The ones on your technical questions seem unjustified however. Posting a code snippet asking people to execute it... I think that crap should even have been deleted by mods.
Well, source code is not sth that you "crack", you can only reverse engineer it (I think it was done with Doom, also OpenRA) or steal it from the company's servers. The use for it is also rather niche, so the risk vs gains ratio is not attractive enough to feed dedicated websites. You can also look at fully open source games like 0AD and check out what they did!
Edit: I stand corrected (thrice); Doom was indeed open-sourced, not reverse engineered. Thanks for pointing out!