I didn't mean that. What I'm saying is that westernization hinders your expansion and thus it makes sense to utilize this slow-paced period with most efficiency, by also accomplishing another goal such as government switch.
While I understand what you're saying, 1.8 westernization doesn't hamper expansion as much as earlier patches. More importantly, for MOST nations that want to westernize, taking exploration will shave off decades via colony sniping that you just can't do with the TI in the way. That's not really an issue to Ottoman, Eastern, Muslim, or Horde (they can generally conquer for their border, with varying degrees of difficulty), though. However, all of these need time to fall behind in the first place, and hordes are stuck going economic if they want to use the decision to go republic, since they want an idea group that lets them leave horde government at all...but hordes want to blob hard ASAP and are geared to do that.
Sure, if you're Russia you can tank DIP tech and spam vassals (pressing horde CBs or some such) and westernize + switch government (assuming you're not playing Novgorod outright of course), and in that case you're losing out on utility slightly less, same with nations like Morocco, but in most cases the desire to westernize runs against a desire to be a republic now (in 1.7 when noble rebels made you a noble republic, that wasn't true at all of course).
But let's say you just open religious instead and tear Asia up with that. In the first 80-100 years, you have a pretty darned good chance of proc rev rebels anyway, then just let them win. This is only slightly less reliable than going 2 full idea groups and waiting on ruler situation, from a time perspective.