>>1357718People did give Kson some shit when she first started vtubing, there was even some telling her to stop being lazy and do her makeup. I dunno about Sachiowo, I don't think she had enough viewers for anyone to care.
But the difference nowadays is that their virtual personas are completely separated from their real ones. When they stream with their avatars they put on a complete change of person and even some change of mannerism that creates separation which pokimane didn't do (can't comment on codemiko).