"Blazing Saddles" is complicated. It's dated, and was dated when it was made. The racist tropes it skewers weren't from 1974, or from the 1880s, but from the 30s and 40s -- as was much of the rest of it. (For example, Hedy Lamarr was 60 years old when the film was made, and had long since retired.) They were familiar enough to be joked about, and distant enough to not be an immediate threat. Today, many of the jokes need explanation, and that explanation can feel more like reviving racism than jeering at it.
It doesn't really poke fun at the racism of the 1970s but is instead immured in it. Parts are cringey and insulting in the way almost any reference to race from the period is. It's a bit like watching original Star Trek: progressive and chauvinist at the same time.
Many people can enjoy the film, including black people. But I'd be leery of white people explaining to black people why they shouldn't be offended by it. It's important and a classic, but I wouldn't recommend it to people.
It doesn't really poke fun at the racism of the 1970s but is instead immured in it. Parts are cringey and insulting in the way almost any reference to race from the period is. It's a bit like watching original Star Trek: progressive and chauvinist at the same time.
Many people can enjoy the film, including black people. But I'd be leery of white people explaining to black people why they shouldn't be offended by it. It's important and a classic, but I wouldn't recommend it to people.