Samsung phones have the capability to do this. There's a setting you can set to only charge to 80%. It looks like they mention that in the article.
Android phones in general have something called Adaptive Charging that attunes to when you normally need a full charge. For instance if you are charging at night while you're sleeping it will charge slower than it would during the day to improve battery health.
I'm not going to tell anybody what to do or who to vote for but one of two things are very likely to happen at the end of this election:
Choose what you want to do, but take responsibility for your choice. Vote in your local elections. Big changes can happen from the ground up.