Part of what I post are my thoughts - sometimes questioning my own positioning. I was here posting long ago when the Fed and others were out there saying inflation was transitory - and I was questioning it for a variety of reasons. I am also as of today 10.9% of my entire net worth allocated to precious metals & miners of those PM's. (Thank you run up in Gold.) I'm also very short term on fixed (with the exception of inflation protected debt). zThat is the stance of someone who thinks inflation hasn't been beaten and/or the dollar is likely to fall (and thus the value of those PM's rise). But I presented the above because, in general, the pendants of today are way too static in their analysis of what is a very dynamic system - people's responses to changes (e.g. a price jump in the price of iPhones or whatever). As you note, for some goods there are no/limited substitutes. But even for those, the buyer will have less to spend on other things, thus decreasing demand for those goods.
Ironically, the economy is being stimulated (and trade balance worsened) just by the thought of tariffs - people are front running buying of things they think will be more expensive in the future. This in of itself causes prices to rise. As students learn in Econ 101, expectation on future prices rising can cause a shift in the demand curve for that good.
As you also note, when in doubt assume those in power will take the easy way out. That way is to stimulate demand through fiscal or monetary means. That also reinforces my long term view that my biggest exposure is inflation and a decreasing buying power of my dollars. Some of it I can't control - e.g. my pension from mega-corp is not inflation adjusted and is currently about half of my base line spending. There has already been damage on that front - when I retired in 2009 my base line (limited but not extreme) budget could just about be fully funded by my mega-corp pension.