He HASN'T removed them from everything. Not even close. At the very most he's just getting involved in different things and on different sides, and not many of the new fights he's picking have much of an upside that i can see.
He's already bombed/missiled Syria. US soldiers are on the ground in Syria and have fought against Syrian govt forces, which is an unabashed act of unprovoked war and is far further even that Obama went.
He's enthusiastically cheerleading the Saudi-led blockade/threats against Qatar, despite the fact Qatar is actually a US ally and has US bases on its territory.
He's realigning US foreign policy to closer links with Russia at the expense of Europe. On top of his many-times-expressed belief that NATO is a waste, today's statement that the US/Russia would be starting up a joint cybersecurity centre was truly unprecedented. THe Europeans aren't idiots, they know there was Russian interference in the Brexit vote and the French election, and now they see the US jumping into bed with the people who did it.
He's made active, imminent threats of military action against nuclear-armed North Korea. This is also a new thing.
His public statements have repeatedly congratulated dictators and autocrats for seizures of power and acts of murder, while he loudly condemns democracies for minor or imagined offences.
He's completely outsourced military policy in Afghanistan to the generals, who have promptly brought in more troops and involved the US more deeply there.
He's even continued Obama's morally and politically bankrupt policy of supporting the Saudi invasion of Yemen, which has created yet another humanitarian tragedy and refugee population.
Can you seriously name ANYWHERE in which he has meaningfully withdrawn, or showed military restraint, or done ANYTHING which can possibly be construed as 'removed them from meddling'?
Edit: forgot one, he's taken Obama's policy of de-escalation with Iran via the atomic treaty, denounced it as too soft, and filled his defence cabinet with long-time Iran hawks, while supporting the regional ambitions of irans long-time rival Saudi Arabia. It's not actually involvement there yet, but the trend is again towards more meddling rather than less.