Can't deal with reason, so starts engaging in personal insults. Give it a rest.
The point I raised is that Cameron was caught in a similar situation: in the first movie, they were thinking of things like spores and all that, and he argued that since such content was cut in the movie then he didn't use it in the second movie. That's basically it.
Eventually, Ridley brought back that aspect of the alien in the prequels, which means different life cycles and organisms are now part of the franchise. So it's no longer about just the egg, facehugger, and alien (including the queens, warriors or drones, and hybrids).
The implication, as I pointed out in another thread, is that you can have a "personal canon" if you like, but it's meaningless because something canonical is widely considered. In contrast, anything personal is stuck with you and your imaginary audience.
With that, what's canonical is what the IP holders allow. That means the ff.
There are different types of infestation, gestation, growth, and organisms.
New content can now be brought in to deal with what should be seen as discrepancies in the original films, and additional new content can be used to explain discrepancies that other new content created.
The franchise can move or expand in different directions. For example, they can come up with spinoffs like the new movie or add even more factors contributing to conflict (like AI and technology in general, similar to cloning, mutation, etc., in the fourth movie) which might take place for the TV show. From there, they can probably make TV or video versions of some of the games, comics, and novels, and even remake the first four movies. Or maybe even come up with "alternative universe" stories, like what happened to Burke, or adapting Gibson's unused script for the third movie (besides the audio drama).
The catch is that the novelty of the alien gets worn out fast, i.e., there's not much that one can say about it beyond what the four movies expressed, expect for something like a major war between the creatures and man. That's why the prequels were inevitable, with new content, like various authorized media and even the upcoming movie and TV show, used to fill in some content, e.g., the origins of the company, what happened to the colony, what happened to Amanda, and so on.
