It’s the opposite. In the 60s and 70s many western countries were semi-socialist. Just look at Britain, the state owned a significant proportion of the industry, housing etc. the unions were extremely powerful (by modern standards). Same in other European countries.

Arguably the US was generally much more left leaning than now, even somebody like Nixon might struggle passing off as a moderate/rightwing Democrat let alone a Republican just based on his domestic economic policies…