In your world, how would anyone who makes an intangible product ever be fairly compensated if you could just steal it? Things like books, songs, video games, films do take real effort, time, care, talent, and loads of hard work to create, and if someone consumes that, they need to pay the creators for that consumption.
There are ton of creators on twitch that get money thrown at them when you can watch their content for free. They have ads, but they still get money thrown at them. People know that if you like something you need to support it if you want more.
We have platforms like patreon or Kickstart to fund creators and proyects.
I find a lot of people make the argument you're making to try and justify their own theft of IP. But those same people sing an entirely different song the moment someone else begins to steal from them. I certainly hope that happens to you someday, that your hard work is not fairly compensated or stolen from you, so you can understand it from the opposite perspective too.
I'm a programmer and you can copy all my code, I don't mind, if we all collaborate we can create better things. You can copy my application or my code, but you can't copy my way of thinking, I will always be ahead.
There is a guide in xda
This is the magisk they are referring to: Magisk