@migh
Maybe because the author remembered that there was plot and started progressing that a very short amount (to which, the comment section was flooded with dismay about). Though, the most recent chapters are back to their usual fluff, there is still some foreshadowing.
i.e. People want a slice of life without plot (like the mangadex genres suggest), when according to a site that actually sells the books (https://www.viz.com/read/manga/fly-me-to-the-moon-volume-1/product/6410/digital), it's a Sci-Fi RomCom.
Quality of writing is still more of less the same, imho, though I started it over a year ago and haven't re-read the earlier chapters.