I'm not downvoting you, because I think you make an argument that many would make.

"Tariffs apply to imports, so produce locally instead".

The argument unfortunately has 2 flaws;

A) local production is expensive (which is why manufacturers fled decades ago.) If it is reintroduced here those goods remain expensive.

B) most things are not made in one place. Steel comes from here, electronics from there, energy from somewhere else, and so on. Even farmers use imported fertilizer, machinery and so on. Since the Tariffs are on "everything" (not just finished goods) they drive up the cost of local manufacturing even more.

A long-term strategy to increase local production makes sense. But it has to be done in a targeted way so as not to harm everything else. Typically it starts with finished goods, then slowly working down the food chain to improve the supply of parts making up those goods.

Exemptions on finished goods (like electronics) kills any gain. He might have, for example, exempted electronic parts. Which would then incentivize assembly to be local. Once you have local assembly you could look at say packaging, and so on.

The approach taken though doesn't lead to the outcomes being touted. Tariffs at country level are dumb. Excempting finished goods is dumb. Tariffs on things that can't be made locally (like coffee) is dumb.

That's before we talk about stability and certainty. For Tariffs to work you need both, and neither are in play here.