Why it's weird? Seems obvious. Because it doesn't behave any differently than any other process that we don't think of as conscious. We don't think of a valve as conscious; and if we make a Rube Goldberg machine valve, we don't think of it as more conscious. It's just a series of valves that do a predictable thing.
I don't think it's defensible to say
1) that a transistor isn't conscious,
2) that a bunch of transistors that I've wired together aren't conscious, because I know how I've wired them together and therefore I know when I give them a particular input I will get a particular output, just like the single transistor, then go to
3) that I have a bunch of transistors that I've wired together, but I put in so much input that I can't remember exactly what I've put in, plus I've wired some of the transistors to output random numbers that would be difficult to guess and fed them in also, therefore I don't know what will come out, are conscious.
Even if I do accept this, if I take away the random number generator, and I can literally predict what can come out (by running a test in advance), and I still considered that consciousness, that would be odd. The only reason why I ever suspected consciousness was because I couldn't predict the output. I shouldn't even have accepted that, because I didn't think of the random number generator as conscious. [edit: of course, with the same seed the random number generator would have the same oddness.]
It seems a bit like an argument from ignorance, a theological argument. Not understanding how something moves makes it alive (animated by spirits.) But it's even weirder to assign it metaphysical qualities when you built every single element of it with the goal to do the thing that it does, and it does it totally predictably and deterministically.