But ignoring a judge's order is not. No one is above the law (or at least they didn't used to be), and obeying a judge's order is -pretty much by definition- "the law".

Probably - but he hasn't done that yet. Trump hasn't just ignored an order. The closest they've come is with the El Salvador flights, and there they've tried to take refuge in arguing that they were trying to comply with what they claim to have understood the order to require. Even if there's an argument that his administration did that with the El Salvador flights (and the judge hasn't ruled yet), I'm fairly confident that the President wasn't personally involved in the granular decisions whether or not to turn the planes around at 7:00 PM on a Saturday night.

Most lawsuits against the government don't name the President personally. They're filed against the agency and the agency heads (again, think NFIB v. Sebelius or Loper Bright vs. Raimondo, filed against the Secretaries of HHS and Commerce, respectively). There's not going to be many situations where the President can actually violate a court order, because most orders and injunctions are going to be entered against the people who actually run the agencies - because most statutes actually vest authority in the agency heads, not the President. The President gets to appoint the agency heads, but it's the agency heads that have the nominal authority to do (or not do) things under the applicable rules.