You got "shut down hard" because many people will immediately reply to a post and not read the full thread. And, those who corrected you all posted within 3 minutes. So even if they had read the entire thread, they may have been typing while others posted.
No one thinks you were intentionally trying to give wrong information. But as the board moderator likes to say "there is no pixie dust on the Transportation board". It's all about facts. I don't think anyone who corrected you did so rudely.
I do agree with
@Pixie Dusted Snow that the fact DME is being shut down at within a year makes it doubtful luggage delivery would return, even if Covid goes away. And even if
@zoo2tycoon has some inside line and knows Disney is planning on bringing luggage delivery back in July (for example), no one should really count on it because Disney could change their mind.