I recently got into a discussion on this topic in another thread. One key detail here is, for better or worse, terminology/jargon:
Equipping and Unequipping Weapons. You can either equip or unequip one weapon when you make an attack as part of this action.
Quick Draw. You can draw or stow two weapons that lack the Two-Handed property when you would normally be able to draw or stow only one.
Critically, equipping and unequipping is not the same as drawing or stowing. Without Quick Draw you can drop two weapons to the floor, with Quick Draw you can put them both back in a sheath/holster. Without Quick Draw you may only use your one free Interact to draw a single weapon, but you can equip a weapon with each attack. IMNSHO, this "equip" means shifting weapons between hands, switching between using a staff as a walking stick or quarterstaff, etc. It would not include picking up a weapon from the ground or pulling it from a bag like Quick Draw would allow. YMMV. I have not been following this thread closely enough to know how this would affect the Nick ability.
I think that quick draw has to be read with equipping and unequipping ("when you would normally be able to draw or stow only one").
With all of that said, I will point out what I am pretty sure I have referred to before-
1. I enjoy interpreting rules, although it's kind of a bus driver's holiday for me. I try and interpret rules so that they make sense together and holistically using the terms, but not in order to either create advantages or loopholes, nor to deprive players, but just to make sense of them.
2. I am not the DM for anyone here, and I will not come to your table and slap the dice out of your hands if you play differently. These are all how I view the rules.
3. I have never found "weapon juggling" to be a problem at any table I have been at, probably because the players at my table (and when I play, myself) aren't ... into that. In other words, people tend to think of concepts and build to them, as opposed to looking at rules and building to the rules. As I stated repeatedly, if someone wanted to play a concept that was against the RAW, I'd work with them (the character that dual wields hand crossbows) so that their concept just works as opposed to trying to do some sort of "hold, drop, etc." that requires parsing multiple rules and squinting your eyes just right in a way that isn't ... cool. But that's for tables to decide. What's cool.
In short, I find a lot of these rules conversations to be results-driven.
PS- equip and unequip are defined terms that happen to include drawing and stowing.
Equipping a weapon includes drawing it from a sheath or picking it up. Unequipping a weapon includes sheathing, stowing, or dropping it.