I doubt much has actually changed in regard to anxiety and mental health.
I imagine that a great many of the people who had to live through two world wars were fairly stressed and anxious.
People didn't talk about these things years ago and so many poor people must have just suffered in silence and lived their lives in 'quiet desperation'.
So much has changed in regard to emotions and mental health within the fairly recent past.
Thankfully, mental health problems are, albeit slowly, losing their stigma and are no longer seen as a sign of weakness and something to be ashamed of and hidden.
Not anxiety, but I remember around 30 years ago, in a social setting, hearing the father of a friend of my exh who was a local GP say, that in his opinion, schizophrenics were 'the scum of the earth'.
Ignorance on that level from someone talking about suffers of a major mental illness, someone moreover, who would have been the first port of call for anyone with any mh problem coming to his surgery, is just chilling.
If someone presented at his surgery with anxiety, I imagine he would have told them to stop wasting his time, to pull themselves together and then sent them away.