Earlier quoted context omitted.
This is completely correct. It's the same reason why an MBA or PhD can be valuable if you want to go the management track. In Europe specifically - especially in the UK - the class based system is still alive and kicking and is based on subtle tells such as education, name, accent and more. It's less overt than in say India, but still very much present.
I really do think the class system holds us back as a society in Britain, George Orwell had a lot to say on this subject in England your England and I fear the decline he describes in the 1940s only accelerated through the 20th century and into the 21st. That essay is a good read for anyone interested in the topic, although of course much has happened since it was written. I resented being constantly 'corrected' on t…
The accent bit happens in the US too, to an extent. Depending on the accent you grew up with, you get different responses from people in professional or professional-adjacent settings if you forget to switch the knob back to the more homogenized vaguely Iowa-sounding GenAm accent. This covers a gamut of other accents - regional or not (NE, aave, southern, val, etc).
But it's not nearly as bad as RP in England from what I gather - for one, a pretty decent chunk of the population would normally grow up with a GenAm accent with no forcing, unlike in England where it's a pretty hyper local <5% of the native population.