I don't have that specific ex-NFL QB's harsh take in the wiki — it's possible that critique came from outside the pages I can access. But here's what the wiki says about Kyler Murray's actual outlook with the Vikings (from the Kyler Murray page):
He's the heavy favorite to start, with oddsmakers giving him roughly a 90% chance (-1000) to win the job. He's in Kevin O'Connell's elite QB-friendly system, which has historically made every Vikings QB functional-to-good — Kirk Cousins averaged 281 YPG and 1.9 TDs, and even backup Nick Mullens put up 370 YPG and 2.0 TDs. Pairing Murray with Justin Jefferson gives him a top-flight WR1 and makes the Vikings a breakout-offense candidate.
The competition with J.J. McCarthy is real but tilted. Murray is the clear favorite by resume and experience, though he showed some rust at minicamp (consecutive INTs in 7-on-7s). The QB room has reported tension — Jason La Canfora reported McCarthy may want out due to personality clashes — but Kevin O'Connell publicly called the room "professional" and "positive." The decision will come during the first 1–2 weeks of training camp in late July.
On Sal Vetri's channel, an expert pushed back on the Murray critics, saying: , and even this last year's version of Carson Wentz." So at least some analysts think the doubters are overblown.
Bottom line: Murray is the betting favorite, has a strong system around him, and the path to the starting job is wide open. The "harsh take" you're referencing might be the minority view — most of what I see in the wiki is cautiously optimistic about his fit in Minnesota.