I think there is some validity in this view, but the paper you referenced provides a useful clarification on consciousness's role in the process. More fundamentally, IMO, there is a conceptual problem with what consciousness is perceived to be by most people. It seems to be the common view is that our consciousness is like an absolute ruler of our minds and behavior; thus anything we do is a result of conscious volition. The original study by Libet cast serious doubt on this view, and the problem of addiction clearly refutes that our consciousness is an all-powerful ruler of our minds and decisions (if consciousness had all-powerful control, addiction wouldn't exist). But it also seems undeniably obvious that our conscious minds play a role in our decision making. The 2019 paper you reference carves out a role for consciousness in the decision making process.

For the last several years, I've been viewing consciousness akin to the Prime Minister in Parliament. The Prime Minister is a member of Parliament, and he casts votes like any other member. The more influential the Prime Minister, the more he can influence decisions of the Parliament, but he is not an absolute ruler, and sometimes the Parliament goes against his wishes -- this explains the addiction problem. Also, the Prime Minister is a politician, so he ends up taking credit for the good decisions of Parliament and denies or minimizes the bad decisions. Similarly, consciousness tends to explain and justify decisions after the fact. Split brain (alien hand) studies have shown that consciousness will make up reasons for behavior even when it had nothing to do with the decision.

The Prime Minister and Parliament concept has more explanatory power than the omnipotent model of consciousness that most people ascribe to. This also has implications on the free will debate. If you conceive free will as coming from the omnipotent consciousness model, then I believe it's apparent that we don't have free will. If you conceive of free will and decision making coming out of the Prime Minister and Parliament model, then free will as part of decision making is preserved.