I don't mean to paint all Warlock players (or for that matter, Power Gamers) with one brush,
Apparently you do, since that's exactly what you do next.
but in my experience, the only people who fight for the most-generous ruling here (that you have Hex going all the time with all your slots and anything less is nerfing the Warlock)... like to play Warlocks (or worse, Warlock dips) because the result is overpowered?
"The only people who disagree with the way I want it to work are powergamers who want overpowered stuff." Good thing you aren't biased or anything.
The fact that some people see the "concentrate through short rests" as RAW just means they are dirty power gamers, right? Couldn't be people reaching their own conclusions based on the text, it has to be powergaming.
For your information, I've stated more than once that allowing it or not allowing it makes very little difference to the warlock overall. So not allowing it isn't a "nerf", and allowing it is only a minor boost. My understanding of the RAW indicates it's allowed - despite what the Sheep Mage thinks.