That is a possibility. Yet, what I think leads credence to it being the Maker shaping a universe to how he sees fit is the solicitation for #2 which I'll spoiler for anyone who hasn't read it.
spoilers:end of spoilers
The Maker plans to make sure Earth’s Mightiest Heroes never become heroes at all. And then he can reshape the universe into exactly what he wants it to be…
And while yes, not all solicits can be taken at face value, it very much seems to fall in line with that he was doing at the end of this issue. Doesn't mean all the changes Makers made will stick once the Ultimate line properly relaunches, but this universe or at least whatever it looks like by the end of this series seems to be the setting for it.