This sentiment has probably been uttered throughout the ages by every introvert who was ever forced to socialize, as well as a good deal of extraverts who would rather be left alone.

I think it is possible on a personal level to feel suffocated by social pressures, but as a general trend, I think this is impossible to answer.  There isn’t one code of conduct for all of human society, so some groups of people value more extraversion, and some more introversion.

In terms of the actual ratio of introvert to extravert in the world (in the mbti sense), I guess if you could type a population accurately enough (I wouldn’t even trust myself to do this in an offical capacity) and then track it for a couple generations, you might be able to find out whether or not the ratio changes and make some guesses as to why.

However if you’re looking at extraverted values taking over, I guess you’re looking more at who has power, and who’s voice is being heard.  I haven’t typed a lot of historical figures, but as far as I can tell (with the exception of the shift to almost all ET world leaders with the adoption of democracy) the types of the people who get attention in their respective fields at their respective ages are pretty similar to the types of people who got that attention before.