Epigenetics is not Lamarckian. There are ways in which it mimics, badly, some features of Lamarckian evolution, but it’s its own thing that has unpredicable, non-Lamarckian side-effects. The only way Lamarck’s speculation can be resurrected is through intervention by the kind of genetic engineering that we aren’t sure is possible yet. A genome is the great grandaddy rats’ nest of all rats’ nests, and giving a creature a long-ass neck in a lab is probably more work for less reward than the original 100,000 generations accomplished in making a giraffe that worked.
What Mr. Plasma should do, instead of trying to dig himself out of the classification of internet troll, is come up with experiments that demonstrate his ideas in the lab, on the one hand, or observe the plasma lab of space directly and establish that it exists to the extent that he believes it does. At this point all he’s doing is hoping that people will think “plate tectonics? that turned out okay, maybe this could too.” Frankly, it isn’t interesting.