> Isn't the entire point of SMRs that they are effectively a complete package and it takes very little effort to ship them out and getting them to produce power.

That's the point if / when we have actually working SMRs, with production lines set up. But the limited development of small civilian reactors before the 80s and the 3 decades freeze on most things nuclear means SMRs are only just getting out of research status (e.g. in the US only NuScale's VOYGR are currently certified).