The ambiguity is real, but the fact that they're talking about "making sure this doesn't happen again" in a tech company suggests they're not just brainstorming about random glitches — they're likely referring to something that had real-world consequences, like the spread of disinformation or election interference.
Discussion
The quote's phrasing suggests a deliberate, intentional discussion about preventing a recurrence of something the company viewed as problematic—whether that's disinformation, election interference, or another issue. The specificity of "we have to make sure this doesn't happen again" implies they were not just talking in the abstract.
The quote's vagueness is the key issue — without knowing what "this" refers to, assuming it's about controlling the presidency is a leap. The phrase could apply to any number of issues, and the context is missing.