All of mainstream news outlets covered “Ukraine’s Nazi problem” prior to the war. It was only after the SMO was launched that the propaganda machine forced everyone to toe the official party line - all Russian news outlets were banned, and all non-Russian news outlets were put under strict control of the USA and Ukraine.
From Newsweek:
"Ukraine Makes Birthday of Nazi Collaborator a National Holiday and Bans Book Critical of Anti-Semitic Leader"
https://www.qwant.com/?q=Ukraine+names+holiday+for+Stepan+Bandera+Newsweek&t=web
"The Ukrainian city of Lviv, which was the nationalist's home city, also announced this month that next year would be "Stepan Bandera Year," a move criticized by Israel.
The New York Times:
"Officials in Kiev say the militias and the army coordinate their actions, but the militias, which count about 7,000 fighters, are angry and, at times, uncontrollable. One known as Azov, which took over the village of Marinka, flies a neo-Nazi symbol resembling a Swastika as its flag."
https://www.nytimes.com/2014/08/10/world/europe/ukraine.html?ref=world&_r=0
NBC News:
"But even though Putin is engaging in propaganda, it’s also true that Ukraine has a genuine Nazi problem — both past and present."
https://www.nbcnews.com/think/opinion/ukraine-has-nazi-problem-vladimir-putin-s-denazification-claim-war-ncna1290946
"There are indeed neo-Nazi formations in Ukraine. This has been overwhelmingly confirmed by nearly every major Western outlet. The fact that analysts are able to dismiss it as propaganda disseminated by Moscow is profoundly disturbing. It is especially disturbing given the current surge of neo-Nazis and white supremacists across the globe."
https://thehill.com/opinion/international/359609-the-reality-of-neo-nazis-in-the-ukraine-is-far-from-kremlin-propaganda/
Here is another example of how this all worked:
In 2018, the the Republican-controlled U.S. House of Representatives voted unanimously to bar U.S. assistance going to the Azov battalion because of its Nazi ties.
“I am grateful that the House of Representatives unanimously passed my amendments last night to ensure that our military does not train members of the repulsive neo-Nazi Azov Battalion, along with my measures to keep the dangerous and easily trafficked MANPADs out of these unstable regions,” said Rep. John Conyers, who introduced the amendments.
The amendments were added because Ukraine’s Interior Minister Arsen Avakov, who oversees Ukraine’s armed militias, announced that Azov troops would be among the first units to be trained by the 300 U.S. military advisers who have been dispatched to Ukraine in a training mission codenamed “Fearless Guardian.”
Conyers was not having it.
https://orinocotribune.com/us-congress-admits-nazi-role-in-ukraine/