Now you're backtracking. Those other primates weren't humans. In human history, pets are not recent by any measure.

We have no evidence of a specific period of homo sapiens in which we know they did not keep pets.

Also, other animals have been observed keeping pets.

I'm not backtracking, you're simply not operating within the proper context boundary, or perhaps getting hung up on the least important[0] semantic imprecision in the thread[1]; regardless of whether we're talking about "human" or "primate" evolution (of the kind that is relevant to this discussion), it simply does not happen at these time scales. We're talking about evolution of highly conserved behavioural traits, not about "the History of homo sapiens sapiens" stricto sensu.

[0] It's the least important imprecision because in general, when we talk about the evolution of a species, we typically also consider common ancestors that don't necessarily have the same label as the modern species. When we speak of "human evolution", we're referring to proto-humans and human-primate common ancestors as well. Anyone would gloss over this in context.

[1] Note also that the imprecision was someone else's, not mine.