I'll tell you who cares. The spouses of the brainless munters who blow their savings/spouses savings chasing ridiculous pipe dreams. They definitely care
Brokers actually love experts, particularly the mentally unhinged ones like your old "mentor" who I disparaged earlier. But he's loved much more than the ordinary gurus/pseudo experts because he generates huge audiences. They bring wide, beaming smiles to the faces of bookies & brokers coz he sends them into our arms in droves perpetuating the myth that hard, diligent homework will turn rookies into super traders!
Most trading forums are either predominantly broker sponsored or spattered with broker analyst threads churning out all the usual clap trap, including healthy doses of traditional technical analysis. Punters lap it all up like a starving man at a banquet.
Based on actual verifiable active client data, there are literally hundreds & hundreds of participants gorging on & swallowing the never ending garbage, yet that same data reveals consistently successful participants can be counted on the fingers of both hands at most of the busy firms. They're the same faces, usually with accounts at different tiered shops.
The rest are either desperately attempting to gain traction by running to stand still, or more realistically getting flushed on a very regular basis, regardless how long they spend rolling the dice or topping up their depleting accounts in the hope of turning things around.
No amount of 'knowledgeable experts' are going to turn eager rookies into focused, well drilled, successful punters anytime soon & all the technical analysis training & education in the world won't make a ha’pence of difference to the colour of the rolling data stats either.
The bookie & brokerage firms know to within a whisker precisely how it's going to play out every time each batch of 100 fresh applications & re-boots are shuffled & stacked, regardless how long the punters are active.
Punter bets & occasionally wins, broker wins
Punter bets & mostly loses, broker wins.
Punter bets often but ends up running to stand still, broker smiles a lot & still wins.
Rinse & repeat.