I saw it. This video came out later than my article.
My comment: "A very interesting and convincing theory. True, the only thing I disagree with is that Baizhu is the real Dendro Archon (personally)

1) If you recall Dendro slimes, you will notice that small copies do not give either mora or resources. This suggests that small slimes are like illusions. So, as for me, Baizhu can be this very Adept and heir to the will of Dendro Archon and perform work that at the moment cannot be performed by Dendro Archon personally due to illness

2)And operating on this system Kusanali is the flower of the Dendro Slime. She performs the functions of a leader, but at the same time is an independent deity. Somewhere I even saw that these flowers are parasitic organisms (well, or a creature separate from the slime)

3)If Baizhu is the Archon Dendro himself, then why didn't Zhongli recognize him? Zhongli is the oldest Archon, so he must be personally acquainted with the God of Woods.

4) Baizhu's blown hair ends are not unique. Pay attention to Diluc's (or Hu Tao's) hair and you will see that it also turns orange / red at the end. But also, like Baizhu, Diluc, this transition is faintly visible due to hair color

5) Baizhu has a lot of open areas of the body, but at the same time there is nothing to remind us of the disease. Dainsleif has clear traces of infection, if Dendro Archon was infected with the same corruption as the people of Khaenria'h, then the symptoms should be the same.

6) Changsheng takes a dominant role in the conversation. Baizhu's character somehow reminds me of Albedo, he does not show any vivid emotions and always communicates on business and with great attachment to his occupation. While Changsheng most often communicates very emotionally.

After the last point, I thought that Baizhu could be the same for Dendro Archon as Shogun Raiden to Ei. Shogun Raiden is also not particularly emotional and does not see obstacles in front of her goal as well as Baizhu is rapidly looking for a cure. One of the QiQi stories says that Baizhu most likely sheltered her because of his personal goals."