Chosen Solution
I know it would be better to disconnect daily - but I look answer like - “Samsung officially says DO NOT leave Galaxy S8 for longer than “x” days as it will explode” I do not look for advise like “ better disconnect it daily” because I need it as HotSpot 365 days a year. I look for other advises like “open it up - disconnect battery - and S8 will work without it” But I do not know answer for that question - will it? I know iPhone not and they will CPU throttle thank You for help :)
Constantly leaving it on the charger can severely damage the battery and cause it to swell up. You could technically connect it to a DC power supply and eliminate the battery but that will look jerry- rigged. Why are you using the phone as a hotspot constantly?