Project Veritas, the mysterious Jordon Walker, and an edited interview.
Newsweek does a nice analysis of the actual content of the video. Even if we accept this an authentic interview with an informed employee of Pfizer, there is no indication they are actually creating new strains so they can profit from vaccines.
OTOH, studies to anticipate future mutations, in order to develop vaccines, especially if this can be done via stimulations, seems like a good idea.
Iirc, Project Veritas has a record of editing the content of interviews to substantially change the meaning. Among other dirty tricks.