Presenters Ant and Dec also said they have removed all previous content of them impersonating “people of colour” on their show Saturday Night Takeaway.
John added: “A lot of the people in charge now at the BBC just want to hang onto their jobs.
“If a few people get excited they pacify them rather than standing their ground as they would have done 30 or 40 years ago.”
John also took to Twitter to share his views with his 5.7 millon followers and wrote: “I would have hoped that someone at the BBC would understand that there are two ways of making fun of human behaviour. One is to attack it directly. The other is to have someone who is patently a figure of fun, speak up on behalf of that behaviour. Thank of Alf Garnett…”
He then added: “…we laughed at Alf’s reactionary views. Thus we discredited them, by laughing at him. Of course, there were people – very stupid people – who said ‘Thank God someone is saying these things at last’. We laughed at these people too. Now they’re taking decisions about BBC comedy.”
Fawlty Towers was first aired back in 1975 and came to an end four years later.
The main cast members alongside John included Andrew Sachs as Manuel, Connie Booth as Polly Sherman, Prunella Scales as Sybil Fawlty and Gilly Flower as Miss Tibbs.