It's clutching at straws and it's truly pathetic. People code switch all the time - for example, people talk about using their 'teacher voice' in the classroom and then talking more informally outside work.
Someone going around Clacton trying to drum up Reform support is going to adopt their 'man of the people' voice and sound as chummy and relatable as possible.
It's desperate and utterly nonsensical that Reform have seized onto this part of his CV - he does not have a successful acting career behind him.
And no one needs to fake an exposè of racism in Reform - they are a racist movement.
It is not remotely plausible to anyone with a functioning brain cell that Channel 4 would fake this or be fooled or that this bloke would participate in such a far-fetched ludicrous scam. They went to film racism in Reform and they found it. Because it's there.