Your choice of using tariffs to keep the rubber dog poop factory jobs in America eventually fails because they’ll just be away automated anyways. Trump-style protectionism doesn’t make the problem go away because it is ultimately one of a huge value gap. And this is why his tariffs have closed factories rather than actually helped them.
If capital continues to become much more valuable than labor (via robotics, automation, etc...), then eventually we have to decide what to do with all the obsolete humans who we don’t need labor from anymore. We can hand them welfare checks, give them a basic income, have them do pointless jobs (eg move dirt back and forth, or make rubber dog poop that doesn’t justify their paychecks), or...just throw them away. Some of those choices are more moral than the others.