Unfortunately a majority of American voters saw what happened in the first Trump term and decided that they wanted more of it, with even fewer controls and restrictions.

The OP is correct, Americans collectively own this just as other countries' nationals have owned responsibility for the bad governments they've put into power. If the general response is one of absolving themselves of responsibility there won't be the necessary level of reflection and reform to prevent it from happening again.

As it is the damage done to US power and credibility will take decades to fix, and it's only 100 days in.