Wrong. Personal loot was implemented in MoP specifically in LFR to counter trolls in LFR need rolling everything in Dragon Soul LFR. Funneling effected 20-30 guilds WORLDWIDE tops, this was not an issue and literally nothing changed as they're still running a dozen runs of each raid to funnel loot. The only issue Master Loot had was in pugs. They solved that by forced personal loot in pug groups. There was VERY RARE situations of greedy leadership, but the majority of those guilds were not good guilds nor did they last very long. Frankly trials do not deserve loot over established raiders, they should have to prove themselves before getting loot from a guild, getting loot then leaving a week or two later, hinders that guilds progression because of the player being a guild hopper. Trials deserve NO LOOT until they prove themselves loyal to the guild and adequate as a raider. Bottom line. Especially when they want to force minimal drops that you need for progression raiding.
I disagree entirely, we've had several situations since Legion where you're fishing for specific items from prior tiers, with and without Titanforging, just because the items are not as valuable later on and Blizzard just doesn't correct the problem. A few notible situations I can give immediately off the top of my head Unstable Arcanocrystal, Convergence of Fates(despite serveral nerfs was still BiS for several melee and hunters), and Azshara's Font of Power.
What does that have to do with the argument that I made regarding loot tables being shit for the last 3 years post Legion? You can say it was to juggle in Legion, but Legion was 3 years ago, the loot system and loot philosophies should evolve with the removal of aspects such as what you're trying to use as a counter argument.