By definition, executive orders are not legislation.

President Obama used executive action to implement his policies, in large part, because he had an absolutely intransigent GOP House and Senate to work with who refused to let him have a "win." Trump, on the other hand, has a House and Senate of the same party (for the time being, at least). That would usually be a time of significant legislative activity in Washington, but as we all know these are not usual times. The debacle of the failed AHCA demonstrated very clearly that while the GOP may have a majority in both Houses, by no means do they have a cohesive majority.