The SCOTUS has already weighed in. DACA is illegal. There’s absolutely nothing for Trump to revisit. It’s in the hands of Congress if anything else is to be done.
I would observe kindly, that a portion of what you posted is correct. What else can be done is an open issue.
More importantly, Trump's tweet is vague enough that he may just be deflecting the issue and playing the middle (virtue signaling).
Why get torqued out of shape when we won't know for 6 months?