Any vid with the satanic 666 hexagram on it is definetly red flag. David didnt use a pentagram or HEXagram as his "star". His son sol.mon used it to control demons when he was worshipping moloch.

Acts 7:43

“Yea, ye took up the tabernacle of Moloch, and the star of your god Remphan, figures which ye made to worship them: and I will carry you away beyond Babylon.”