Lmfao. McDavid, Draisaitl, Kucherov, MacKinnon, and Pastrnak are all frequently top 10 in the NHL for giveaways and they're arguably the 5 best forwards in the game today. The Hughes brothers, Hedman, Doughty, Karlsson, Carlson, Burns, Keith, Subban, Letang, Rielly, Theodore, Chabot, Weegar, Crosby, Malkin, Thornton, Gaudreau, Tkachuk, Barzal were also often high on the giveaways list during their best years and many still are.
Giveaways are not only not a sign of low IQ, it's actually a sign that a player dominates possession and drives offensive play because the puck is always on their stick. They are some of the best playmakers in the game. The only time it's a problem is if you're like Karl Alzner, Adam Larsson, Esa Lindell, Joel Edmundson etc and among league leaders in giveaways without generating any offense to compensate.
Bouchard's turnovers are so bad that he's 2nd in the entire NHL for 5v5 xGF% among defensemen with over 500 minutes and he causes so many high danger chances against that he's 4th in the entire league for 5v5 HDCF%. Yeah he's caused some goals against but so has every single top tier playdriving defenseman in the game and most of them can't generate the offense Bouchard does to make up for it. Your eye test is useless and the fact that you think Parayko is better than Bouchard is proof of that.
Also hilarious that you bring up Brian Burke as an appeal to authority when he frequently acquired pylon defensemen during his stint on the Leafs and the Flames. Heck the only time he saw success was when he was gifted giveaway leader mainstays Chris Pronger and Scott Niedermayer.