But don't make it as a habit because complications might occur on the cable or on the charging brick due to external factors. And also, be sure not to use it while charging.
Modern phones also has the feature of automatically stopping, I shouldn't worry but I still have to use protect battery feature incase any circumstances and put the phone anywhere dangerous I only put it on a clean desk, because putting it anywhere might damage the wire.
Based on my 3 years exp with A71, it is fine if you leave it charging overnight sometimes. And no, it doesn't hurt my battery. Even until now the battery of my A71 is still pretty okay considering its age. And yes, samsung phones automatically stops drawing power at 100%.
