You're lumping together a lot of information into a jumble of misinformation...None of these statements are 100% true...
First...a bad MAF from a CAI is not true....MAF sensors can go bad for a few reasons, but to relate it to an intake is just false.
Second, Oiled K&N filters actually allow better airflow for a longer period than the AEM DryFlow...The dryflow has smaller particle filters and DO flow more air when they are 100% clean...These smaller particle filter does, however, get clogged much faster and performance degrades quickly. So it's a toss up...either way the AEM might be easier, but you'll want to clean it more often.
Losing power..partly correct...You may lose a little low end torque, but you will increase high-end air flow, which increases HP...
However, the gains/losses from a Intake mod are basically zero...It is purely a noisemaker without exhaust, intake manifold porting, and a header, all of which will benefit more than an intake.