The ads here would be in the form of posts. You can view them or not. You can opt out of seeing them entirely. You can mute the advertising accounts if you want. This was in the post. If you don't like ads, you'd have the option to not view them.
Your fears are irrational.
If different advertising is adopted by Steemit, Inc. or other interface owners, then there's nothing you can do about it anyway. If you want to address a specific issue that I mentioned in the post, then feel free to do so. But so far, you're commenting on some perceived problems that wouldn't exist with my suggestions.