"Generous acclamation" could be a fitting substitute for "fulsome praise", as it implies an effusive and ample expression of admiration. Another possibility is "lavish commendation", which conveys the sense of profuse and abundant appreciation. "Exaggerated compliments" might be a term to use when the praise is perceived as insincere or overly enthusiastic. "Eulogistic tribute" is a more formal alternative that invokes the idea of a speech or written piece in honor of someone or something. Lastly, "flattering adulation" could convey the sense of praise that is aimed at pleasing and attracting favor from the recipient.