Lincoln "suspended" the right of Habeas Corpus for the U.S. Citizens and also pretended to have authority to suspend The Constitution of the United States of America and replaced it with the Lieber Code.
Both these offenses have (mis) guided the operations of the U.S. Military and the British Territorial United States Government ever since, as they have mistaken Lincoln as the President of our Federation of States --- an office that he never in fact held.
He was "a" President, but not "the" President. He was foreclosed from holding the actual Federation office of The President of The United States of America and he was also prohibited from holding the office of The President of The United States (the presidency of our Federal Republic) by the Titles of Nobility Amendment (1819) prohibiting attorneys from holding any office in our government.
Thus, Lincoln himself was a cuckoo bird --- a British fakir, pretending to have authorities he didn't have and pretending to occupy an office that he didn't in fact occupy at all. He was admitted to the Illinois Bar in 1834, and he remained a member of the Bar until his death, so he literally could not be the actual President of this country.
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The way I see it, human history has been so warped, twisted and fabricated to the point that personalities and incidents of the distant past are nothing more than tools that are used to serve the current and future needs.
Knowing how things in the past really turned out is important for those that pursue the truth. For the masses, as long as these figures can be used to relay your message to them and to get them to feel the way you want them to feel, be it patriotism or something else, then they serve their purpose as useful tools to get things done. Most people would never bother to dig in deeper than what they were told by the general public. It's mostly just using current public knowledge (or lack thereof) and beliefs to minimize the friction of delivering a message.
Are the details irrelevant? Of course not. For the people that need to know, learning the truth about history is vital and should be pursued. Now trying to get the general public to spend what little mental capacity they have available (due to misinformation, being distracted, focused on survival and just want the noise to go away, etc) to learn about it and accept it might not be the most productive course of action in the short-term. If you can use historic figures to sway hearts and minds, regardless of their actual human character, then I think it's fine for now.
For the long term, things like these should most likely be part of education and detailed knowledge about the past is probably something that future generations of normies can benefit from.
Again, I'm not saying people shouldn't know things like this and that the knowledge shouldn't be shared, but if 'Honest Abe' can help change some minds for the better in a few speeches, then it's fine with me for now.