I think editing the patch notes to reflect reality is the right thing to do - after acknowledging the mistake and communicating with the player base. The stealth update is a bad idea and just underlines how poor the communication has been lately. No idea why that tweet said all was well, it's clearly not the case.
I don't know why it's so hard for them to admit they messed up. Community respects them so much more instead of this cover-up and revising history crap.
I know it has already been pointed out that the weapon sandbox update that the patch notes themselves link to has not been updated, but for the sheer unadulterated lunacy of this scenario I felt the need to dramatize the experience of someone simply returning to the game today and checking the update news on the official Bungie site to see what had changed before diving back in.
Yeah, it's a bad clean up job done in a rush.