The claim that people carbon-freezing themselves in stories that take place before ESB contradicts Lando’s and Vader’s uncertainty about if a human can survive the Cloud City carbon-freezing process. Vader states that it was a “crude” carbon-freezing chamber, implying that that specific machine was the issue.
Are you sure? “We use this facility for carbon freezing, you put him in there it might kill him” seems to indicate the carbon freezing is the issue.
It’s still a baffling complaint though because it never happens any other time in anything that matters.