The "road game" excuse this year is just that..There are no fans in the stands. Its not even close to being normal. Other than the travel itself, the rims and the distance behind them, there is no real home court advantage this year.
There is some credible research which shows that the travel itself can disrupt circadian rhythms (sleep patterns) and potentially influence the outcomes of athletic contests. It depends on which direction one is traveling
A study from Standford University's Sleep Disorders Clinic looked at the National Football League's (NFL's ) Monday Night Football results for possible advantages of West Coast versus East Coast teams by a circadian rhythm effect.
For the details see