yes, and if you think of it strictly in terms of demographical representation, the UK has a much higher percentage of overweight, or even obese people, than non-white, same with over 50s.
Not to mention, often the people murdered are the most popular/believed to be the most faithful - the traitors murder them specifically because they know they're not going to ever be banished - like the older lady (Margaret?), Fay and Amos from S1, So if there is a bias it could be a positive one rather than unconsciously thinking black people aren't trustworthy, or whatever!
You could draw parallels about absolutely everything if you tried hard enough. In these last 2 series where tasks have involved picking teams/playing for individuals, it has been 2 white men that were the ones not chosen (Jack last series and Sam this one).
If you look at the contestants for Traitors Russia/India/South Korea, it really doesn't seem like their producers are angsting about having a wide variety of ethnically diverse contestants! That is absolutely not to say we shouldn't have that - I agree that one of the best things about the Traitors is the way it includes such a wide variety of people, particularly in relation to disability, and fully agree that this series really suffered from 'excess of interchangeable homogenous white male 30 somethings'
I just think it would be a shame if the producers did anything to influence this, or focussed too hard on the easiest type of diversity (in that, unlike disabled or older people, race won't mean they have to adapt the challenges etc) to avoid stupid accusations of prejudice like this, rather than just going for the best contestants.