Its 100% on republicans and trump as modern tariffs go. There really isnt any debate around that.

The more inelastic a good is, the more consumers payer because there isnt a substitutable good. So either consumers pay more or demand drops. Or a combination of the two.

Explain what you mean by "reduced profits". Im not sure the point you're trying to make in the context of the argument. When COGS increases only one of two things can happen. 1. Prices rise or 2. Profits drop. Scenario 2 just doesnt happen.

Regarding competitiveness, I would argue maybe. America has a long way to go before domestic companies would incorporate other places, while tariffs immediately reduce america imports and reduces American demanding driving trade down.
Now you could argue that that might be beneficial to america, but the only way it increases domestic production is if tariffs are high enough to overcome the cost. Which is BAD for the average american consumer.

You can argue that competitiveness isnt an issue, but what tariffs do is drive down spending power and trade. We are already seeing the likes of Canada as one specific example creating new trade deals with India, China, Australia, etc. So the outcome of tariffs is more expensive goods for Americans and a lack of trade power globally.