The plot is basically:
spoiler
Lab leak virus used by Russian scientist and evil Egyptian man (I guess) to do white genocide (literally, but it's only mentioned in a couple second graphic and one sentence from the Russian) from Soviet communist bunker. Thwarted by James Bond and British government violating international law, also saving Bond's girlfriend and blue-eyed (this is mentioned a bunch) blonde haired aryan daughter.
Lol you can tell that it was originally just nanobots and they reshot parts of it to make it a nanobot virus so it's topical. They rarely refer to it as a virus outside of like the first scene where they break into that lab.
Yeah good point. The lab stuff was definitely added in later. The whole DNA-targeter trope has been around for a long time as I saw pointed out by I think Yasha Levine. So it was probably a pretty generic story without much real world connection until they made it a virus lab-leak dealio. But the plot otherwise is still basically Metal Gear Solid 5.
I don't even think they were doing a lab leak theory thing. As you said DNA triggered nanobots is just something you'd expect a Bond villain to do, and breaking into virology lab and making it a virus is basically just a marketing gimmick. It's about what you'd expect when an industry offloads creative decisions to spreadsheets and focus groups.