He literally went to space in like the fourth movie, what are you even on about lmao. Godzilla and Rodan got beamed to Planet X and they fought Ghidorah in Invasion of the Astro Monster way back in 1965

That is not the only way TLJ undermines TFA. Did you not read the next paragraph where this article brings up the character threads this movie dropped from the first movie? Then not only did they drop everything from the first movie to focus on new relationships and dynamics, they then ended the movie in such an ambiguous way that they had nowhere to go in the next movie and had to bring Palpatine back so it even preemptively undermined the third movie