I've posted this recently elsewhere, but it seems relevant here as well:
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I sometimes feel that I have stumbled into the crazy zone when reading the responses by a few members of one particular fanbase.

Let's break this down further by examining some of the myths in play:
Myth #1: Wiggins is not that bad:
Wiggins' third season is considered his peak year on offense. He was ranked 256 in TS% that season, 311 in eFG% and 110 in PER, so average or just below average at that end. However, that was probably his worst year for defense in the league--he ranked 453 (out of 468) in DBPM, 268 (out of 468) in DWS, and 460 (out of 468) in DRPM. Accordingly, and while defensive stats are not perfect, Wiggins was absolutely awful in every defensive stat out there--nearly the worst in the league in each category. He was also a poor rebounder and play-maker, and ended up ranked 325 in BPM and 461 in VORP, underlining how he was a negative contributor overall on the court.
That was Wiggins' third year and so-called "peak," a year when he ranked between 110 and 461 in the league. His defense has only marginally improved since: e.g., 473 out of 480 on DRPM for 2017-2018, and 449 out of 514 for 2018-2019. As for his offense, last season Wiggins was ranked 427 in eFG% and 421 in TS%, so he was neither "an effective" nor "an explosive" scorer--the opposite, actually. Given how he was a below-average rebounder and worse passer, it's not surprising that he ranked 364 in BPM last year and 506 in VORP. Accordingly, yes, Wiggins is that bad.
Myth #2: Wiggins was once good:
I have posted the stats here numerous times.Wiggins has ranked between 110-506 in just about every advanced stat category since his rookie year. E.g., Wiggins is the only max salary player in NBA history to have never had a season with a positive BPM or VORP over his career. His career totals so far:
BPM VORP
-2.3 -0.2 2014-15
-2.1 -0.1 2015-16
-2.7 -0.6 2016-17
-2.5 -0.4 2017-18
-2.9 -0.6 2018-19
-2.5 -1.8 Career
He has never been an "explosive scorer"--what he's been instead is a volume shooter who rarely (47.3 eFG%, .520 TS% for his career) makes his shots...while giving you poor rebounding, worse passing and close to the worst defense in the NBA. He has sucked as the first option, the second option and the third option under various coaches and while playing with point guards/centers of varying styles and skill-levels. Wiggins' sole good quality is health--the guy has missed only about 5 games over his career. Other than that, he is what he is: a bad player who hurts the team more often than he helps.
{SNIP}
Myth #5: Westbrook's salary is far worse than Wiggins' salary;
First, let's get this out of the way: Yes, Westbrook's salary is obscenely high, and he is very overpaid for what he gives you. That said, at least Westbrook gives you something. Wiggins has been an absolute negative on the court each and every year, hurting the team in the process. Keep in mind that in 3 1/2 seasons of games without Butler, Wiggins has "led" the Twolves to a .375 W-L record, and has yet to lead "his" team in win shares even once (i.e., not even the season before KAT got there). Here again is Wiggins' salary moving forward:
2019-20 $27,270,000
2020-21 $29,290,000
2021-22 $31,310,000
2022-23 $33,330,000