it was said that he made some very stupid mistakes during the timeskip. probably trying to get people to remember him and ruining whatever reputation he had.
I have a feeling guilty is lying to us about the time zone mistake and has cooked these next chapters to absolute perfection and need to be enjoyed all at once.
look at the wiki for description of memories it's very nice. also the stifled scream can be used to command something and the command is more powerful the longer the weirder has been silent. it also has a physical buff