For today, sure. People act like 365 days is long enough to change consumer spending habits, and onshore production facilities that took years to offshore.
If tariffs are held strong, there will be two possible outcomes:
1) Domestic production will be increased (via American businesses as well as onshoring foreign businesses), providing jobs and ultimately lower-cost products
2) International tariffs will be decreased across the board - resulting in a more level field for American businesses to compete in foreign nations
Few realize American goods have been tariffed internationally for decades, resulting in a difficult-or-impossible business climate for American businesses.
The situation is akin to Wall Street's infamous short-term outcome favorability. Tariffs are a long-term game, and people have to be willing to trade some short-term outcomes for the long-term economic health of America and it's businesses (and jobs, wages, etc).
Reduced competition is a near-term affect. Demand will remain constant (or increase) for goods, so businesses will open and compete over the long-term. In the future it will be cheaper to purchase domestically produced goods vs. import them from half a world away...
In other words, they are a regressive tax --- pure and simple.