My point was that people who say Android tablets are garbage are generally comparing cheap Android tablets to an iPad air or Pro which really isn't a fair comparison.Well, you answered your question.
Reason why iPads do well because Apple controls the experience... there's no such thing as a $200 iPad and there's plenty of Android tablets that can be bought for under $200. And in addition to that, the average consumer will gravitate toward the cheapest model.
I personally don't think all Android tablets are garbage, but as you alluded to... the price will reflect the experience.
I will say I think a 9th gen iPad on sale is generally a better tablet than most of the Android tablets under $300.
But I agree with your points.