How does Burnham saying that she’s seen these graveyards all over equate that she’s unfamiliar with them to you? That’s the exact opposite of her statement. She clearly knows how to act on the planet and how to deal with the Emerald Chain. So she obviously has lots of familiarity with places like this.
I get the exact opposite impression: she has seen graveyards, but not scrapyards, and it e.g. comes as a shock to her that the site would work on slave labor. It's Georgiou who knows her way around the environment, with Burnham just watching and learning.
Hima was Emerald Chain territory, and Book worked for them often enough. Burnham, apparently less so.
The intent is clearly that these ships were not originally wrecked, or previously in the hands of the Chain (if the Chain even existed before the Burn, which is very doubtful.) They might have been old, but they were still operational prior to the Burn. The intent is also clear that they were not meant to represent the 23rd century Hiawatha, Hoover and Cardenas classes, but generic 31st century ships that were damaged specifically because of the Burn.
Such an intent would not be consistent with what we see happened to the ships (no Burn damage but merely various states of disrepair), nor with what we hear of the nature of the place (its product range satisfies the discerning 23rd century customer, save for those parts where it slightly spills over to the 24th). So it's best forgotten altogether, especially when not backed up by dialogue.
I'm actually betting that we'll see some new 2260's-era Starfleet ship designs in SNW and very little recycling of DSC season 1 models. Even the Enterprise may look different from what we saw in DSC.
Depends on the business model, I guess. The PIC shortie was put together out of existing assets, with the show itself investing in different models - but the high budget DSC keeps on recycling.
In-universe, SNW supposedly takes place after DSC S2, so we could easily accept that some of what we saw is on its way out (including the Enterprise hersefl!) and new stuff is coming in.
That the incoming stuff would "look more like TOS" is a non-starter, though, because there is no TOS look. Everything we think we know about the looks of the TOS Starfleet actually comes from TAS. And even that is precious little, limited to two types of support ship and a number of shuttlecraft. What really should be coming in is TMP. And I don't see TPTB going there quite yet.
Timo Saloniemi