In terms of his failure to reign in government spending and reach? If so, I will actually agree with you somewhat. I will counter posit though that he got what he could from a recalcitrant Congress. But I wish we could have gotten more.
I think Regan was the first step towards restoring the United States. Where the wheels came of was in his unfortunate choice of successor. Bush 41 was a stereotypical Country Club Republican and neocon; happy to wear the label of Conservative as long as he could go around starting wars at Will and not being held to the reading of his lips regarding no new taxes. After Bush 41, every successive Republican nominee for President came from the Same Bush/McCain/Romney mold. That is why the Republican base finally rebelled and finally vomited out the lukewarm water served up every four years and nominated Trump. This bringing down the combined rath, weight, and vengeance upon him that made his life a living hell for 4 years. A man of less strong will would have folded but Trump didn’t which was (to me at least) his one redeeming quality. The key now is 2024, do we let the Republican establishment try to force the Bonita gain or do we nominate someone with the strength of a Trump but without the arrogance and hubris?
That is my hope at any rate. Trump shone a light on all the beady little eyes that glow back when you point it at a swamp after dark. Now we need some people actually willing to drain it.