It’s definitely worth using if 80% charge is all you need from your battery each day anyway, as scientifically the option will prolong the battery health long-term. So you get a long term benefit with no downsides.
If you regularly need more than just the 80% charge and using the feature means you have to charge more often during the day and you find that an inconvenience, then disable the setting. At that point there’s no real benefit, because what’s the point in prolonging the battery health if you’re effectively living with a battery you’re artificially limiting to the same state as what a degraded battery would be like anyway?
But you should absolutely use the feature if it doesn’t affect your daily use, because in that situation there’s obviously no downsides, so there’s literally no reason not to.