not sure what you mean by "weaker". If you mean the security, then, I would think that would be a result of energy use going down, not energy use going up. (but as someone else pointed out, the power use seems to be steady, and neither trending up nor down)

(that being said, it becoming more centralized might be an issue for security, yes. I don't know how (de)centralized it currently is though)

Also, isn't there a rule or guideline or something discouraging talking about how getting downvoted?