@Aethersteel here's negi's tweet from dec 4th, 2019:
https://twitter.com/negi_haruba/status/1202085744904482816
if you throw this into google translator you get that he's having difficulties to continue and respects manga artists that continue to draw dozens of volumes. it further says that at first he liked the idea to have a manga continue endlessly. to me this means that it DIDN'T end how he would have liked but just COULDN'T bring it to that end (i.e. continuing for a long time). so yeah, it's google translator and partly my interpretation, but to me it seems right.
also, i wouldn't want to continue this debate endlessly in yuragi's comment section, especially since it was yet another dude that brought it up in the first place.