Nice thoughts and well expressed.
As I went through the blog post for the fifth time and then read your comments. There are a couple of items that do give me pause from Bambu’s blog.
The first item was his protestations over being accused of keeping private data in the log files. His arguments ring hollow. If Bambu were concerned about what people truly thought about the log contents, well… the best antidote for that is transparency. If we are this - in his words - “DIY-minded community”, then there should be every reason to make log information visible to the user. In short, by definition, if you’re encrypting data, you are by your very actions trying to hide something. What might you be hiding? in the absence of answers, folks will make up their own theories. Are they wrong???
The other thing that stuck in my brain was the things that were not addressed. OK, so your hand was forced by the community because of the company’s recalcitrance in making firmware accessible. So this memo looks like Bambu is trying to get out in front of the parade and make it look like their leading. It’s a smart move, I’ll give you that. But C’mon now, we aren’t stupid… well… most of us anyway judging by some of the posts. 
However, sincerity is measured not by what you do when people are watching, it’s what you do when people are not watching. A similar definition is used to define character too. If Bambu were in fact sincere about “allowing” rooting, then why not go all in and do it for all printers not just the X1 just because your hand was forced. If that was mentioned in his blog post, I missed it.