unless you are forcing the DM at gunpoint or something similar, I’d say the DM very obviously has the final say. Which is a very a different question from whether they should allow Tortles & Tabaxis
OD&D also was the starting point for AD&D, they just took it in somewhat different directions. Chances are Holmes was closer than 1e was, never read Holmes or OD&D. Not sure how closely Moldvay then stuck to Holmes either
Given that Holmes only went to level 3 and was basically considered the...
About a third of sales is probably bought to be read and never played, and I assume that they are very much aware of that and factor this in, so no, the market is not just DMs that 'serve their players', whatever that even means
Given the methodology used, I'd say their 'research' was not much better than a coin toss at identifying improvements
Given the accuracy of their surveys (see above), I do not need one to be about as accurate
I agree, because wanting to play a tortle and then insisting that getting to play a tortle already is as much of a compromise as you are willing to make and the DM is unreasonable for not seeing it that way is definitely not my idea of the full scope of a compromise
except that they did propose a compromise and were fine with negotiating. That they have no system to compromise with someone who is not willing to compromise is more on the other person
sounds like you need to look up the meaning of compromise.
Also, so far it was mostly the player side that considered even the notion of having to compromise a red flag