The question is, if you remove all bots from sPVP, how many real players are left? I just try to understand it logically somehow. As a programmer, I'm 100% sure that bots can be completely removed from sPVP. But the fact that bots have been in sPVP for years, as if they were welcome guests. I mean, nothing is done against bots in sPVP. So I could really imagine that Anet leaves the bots in, because without them the population would decrease too much, which ultimately leads to longer queues or even to endless queues, and a completely dead game. But the big problem with this theory is that it would then even be likely that the bots could even come from Anet themselves.
Complot or fact, we'll never know! But the bot problem has been around for how many years without any solution? Normally, these problems should always be in focus of a company as these are guests who consume resources without paying rent and in doing so they usually even make potential paying customers unhappy. From a purely logical point of view, there must be a reason for this permanent problem, and no, ignorance won't be the reason.