"Moses supposes his toses are roses...."

Am I naive to expect commentators on national news who are paid excellent salaries and make their living by speaking to use proper diction? I must be because almost all of the national news reports are rife with mispronunciations, slurred speech, missing or added syllables. Let's just take one example, one out of thousands. On tonight's nightly news on NBC, Lester Holt opened by discussing the "wintery" weather. Shouldn't he know it's "wintry?" In a storm report Miguel Almaguer referred to 1000 casualties and"counning". Shouldn't he know there's a "t" in that word? And in a weather section Kim Cunningham referred to weather in the "Atlannic". Shouldn't she know there's a second" t"in that word? Okay, I'm fussy. But these people make a good living out of written words. They should learn how to pronounce them. If airline pilots were as careless with navigating as these people are with speaking, we'd have crashes all of the place. Plus when English is used correctly, it sounds better.