I knew someone would quip that. But humans are nature too. Our existence isn’t inherently interference (or else the word doesn’t have any meaning in the context). The world has changed due to our existence, and as a part of that the planet is no longer habitable for many bee species. This was the result of nature’s systems reacting to our actions, not the result of us choosing the outcomes that nature provided us.

The chain of causality that is intentional interference is that now that they are dying, we have chosen to not let them. We now force a species to live in conditions that they are unfit for, simply because they are convenient tools for us. The language I used to describe this distinction may not have been perfect, but this is roughly the half-second of logic behind my offhand comment.