Please help me understand... a president is supposed to liquidate their holdings to avoid violating that clause... Trump is liquidating his holdings (selling to LLCs). but the implication is that he is doing something wrong with how he is doing it? how so? Is it the timing (should have been complete before being sworn in?), or that he is taking profit from the sales?
The normal protocols are, at least to my understanding, that a President hands off all assets that could create even an appearance of a conflict of interest with the office to, for example, a trust company, which then goes about managing the assets according to prudent business practices. In the meantime, the President essentially has no contact with the trust until he leaves office. That's probably not 100% correct, but that's the general idea behind.
"Blind trust" means exactly that. One doesn't know what their assets are doing and has no say as to how those assets are invested by the trust. The trust can probably invest the assets how they see fit, even in a manner such that if the President were to do so it would create a conflict of interest. The President is protected from liability however, because he has made no decisions as to the investments. Generally, there is no contact between the President and the trust.
Again, that is likely an imperfect description, but that's the spirit of the thing.
And has been abundantly pointed out, Trump has done none of that. And I don't think it's a stretch to say that he's consulted daily by his sons regarding the businesses. It's not like he has the wherewithal to understand it could cause him the degree of trouble that it could. To Trump, directly and privately profiting from public office presents no ethical qualms. Making policy, promises to foreign nations and investors, and using inside information to profit while in office is completely legitimate. That it comes at the expense of the American people and the legitimacy of the Office is likely something that enters his mind only in some oblique, game-ish manner in which the only problem presented is getting caught. See, to him, what he's doing isn't wrong, it's those who would prevent him from doing it that are the problem. This is evidenced by the fact that he sees leakers as the real wrongdoers, rather than stepping back and asking how to do things in a proper legal manner.