Trump revitalized QUAD, he accelarated it, gave it attention and that's one of the reasons the FM's of Japan, Australia and India have been invited to his inauguration on Jan 20. 
But are the invites necessarily a sign of Trump 2.0's continued commitment to QUAD?
Much will depend on how much Trump emphasises isolationism in over next 4 years and how much leverage Musk applies behind the scenes on Trump to ease up on China. Remember Musk will be keen to protect his significant investments in China.