The veteran actor straight-up bashed ScarJo's newest flick in an interview with the U.K.'s Independent outlet ... saying, in part, "I still hunt out the good shit because I don't want to be in Black Widow. It looks like garbage to me. It looks like a bad video game. I'm embarrassed for those people. I'm embarrassed for Scarlett!" Tell us how you really feel!

Steve went on to add this for good measure ... "I'm sure she got paid five, seven million bucks, but I'm embarrassed for her. I don't want to be in those movies. I really don't. I'll find that kid director that's gonna be the next [Stanley] Kubrick and I'll act for him instead."

SD continued on with his diatribe, expanding the scope to include the film industry at large -- which he characterized as a "big game show" -- but his main gripe seems to be with what he considers selling out to the big studios ... and maintaining some sense of artistic integrity.

That's interesting coming from Steve ... seeing how he's been in superhero movies himself -- including a Marvel fan fave, 'Blade' -- but also another superhero film that many considered "garbage" ... his 2015 appearance in "American Hero," which was like a farce of the genre.

One could argue -- as many online are right now -- that Stephen's other film credits aren't necessarily Kubrick-esque either. He's been in a bunch of films that some might consider bullish and not-that-artsy (aka, B-films) ... including "Felon," "Carjacked" and lots of others.