What is the reason they do things they don't want to do? Because incentive.
That sounds like they force themselves to do something they don't want.
What it actually means is that the incentive is pretty strong. In the case of trinkets that can literally add 100k dps, which is NOT a small amount, that is exceptionally strong. No one here except you is really talking about forcing themselves. At worst is a discussion about return on effort, or whether it IS worthwhile to keep that incentive as strong.
And if there is a reason why we mock heroic raiders on this issue is because pretty much any solution is about diminishing the value of lfr to the point is not worth doing by anyone just because you don't want heroic raiders to ser any value in them, just happens that doing so also makes it useless for anyone else.
Again.
How does "UVLS won't be as overpowered in the LFR version", "Can only loot one mode at a time", "LFR can offer better gear since it's not trying to go for bare minimum", "LFR won't need gating as harsh", or anything of that sort translate in your mind to "LFR is useless for anyone else"?
LFR at the end of the day is still the mode that will be done by people who aren't in organised groups and want to queue whenever they want, and that's not going to stop just because their trinket isn't OP, or even in a hypothetical case where their 528 piece offers no set bonus, or a different set bonus that isn't the overpowered tier bonus, or hell, even though it's not what ANYONE is talking about, it wouldn't change if LFR's item level were lower.
Flex would still be the mode that offers flexible content that isn't too hard, and can be done by a casual group or easier to pug, and THAT wouldn't change anyway, so it's still the mode that would be done by its intended audience.
Are you sure that it's your imaginary hardcore raider that you seem to be talking to making up hyperbole, or are you?
The solution that causes the least problems to the raiding population in general is the one Ion currently supports, you just happen to disagree because lfr is not devalued enough for heroics to complete ignore it.
Correction:
What I took issue with is in specific things he mentioned that either don't work out the same way in reality, or violate their own stances on topics that they've made changes for.
And if you wonder how they can balance it for Flex, then it's easy: They can't, either. However, for Flex it doesn't really matter. It's a much more casual environment. There won't be a race for who clears Flex first, as Normal/Heroic guilds should be able to steamroll each wing the moment they're released. Likely, the people for whom Flex is intended aren't likely the people that think "Oh, we really should get 1 more DPS in for the next boss, but then kick 3 DPS for the boss after.". If they were that focused and determined, they wouldn't be running Flex.
In fact, I'd say they'll err on the side of making it easier with more people just because, even if it isn't a smooth flow.