Sorry, didn't know they were gone. In that case, they should be re-instated, since technology is primarily a function of monarch points. Or maybe removed all together, I'm not sure. Some all-round rebalancing would be necessary for this proposal.
I didn't realize the topic of this thread was sad jokes, but that's about where a "I didn't know they were gone, put them back" line of thought belongs. It gets pretty old seeing heavy discussion on a mechanic from players who don't use it, don't know how it works, and don't understand its opportunity costs. Someone who doesn't know that ROTW hasn't taken a monarch point penalty since 1.7 is not someone who has any legitimate knowledge or experience with westernization, or its limitations.
Just to be clear, when a tribal nation reforms their government (have all native ideas and a Western neighbor) their technology instantly jumps up to whatever their neighbor has for free, and they adopt the government type of one of the Western nations they border (using the overlord if the neighbor is a CN). There is no cost or penalty for doing this, other then losing their tribal ideas and buildings.
This is unique to the native council. The other tribal governments do not have this happen.
A nation that westernizes, as you say, can take anywhere from 50 to 100+ years to catch up in technology and ideas, depending on whether you're willing/able to do it very early. If you're westernizing in the 1600's, expect to catch up only very near the end of the game, if ever.
I would hardly call a mass intellectual movement "circumstance". The structure of European culture and it's development lead to a superior technological base. Even today Western cultures dominate the world.
The concept of westernization seems to reflect an alteration to adapt the strengths of that culture, rather than an alteration to actual technological prowess. Doing this in the pre-industrial era before the gap widened would logically have been easier than post as the differences were more recent historically, but it's better to stick to gameplay considerations here.