Okay, so as an alternative to:
Он не хочет заумничать в этом уроке.
Intended Meaning:
He does not wish to get scientific in this lesson.
Maybe it would be better to just change the wording a bit to avoid the peculiarities of заумничать. Would this work:
Хотя амёбы тема, это не наука урок.
Intended Meaning:
Although amoebas are the topic, this is not a science lesson.