It absolutely is
And these guys are paid pretty well in money, fame, and influence to suffer through it
It's still enormously physical, just without clotheslining, head-slapping, leading with your head and/or launching, hitting defenseless players, or aiming for a stationary guy's knees.
But it's more than that. Today, if you launch and try to "let physics happen" instead of wrapping up-- you might totally miss the play and modern skill players are going to take advantage better than ever before.
I think removing most of those dirty shots and focusing on shoulder-hip contact and wrapping up have net been a good thing.
From pee-wee leagues, kids need to see examples of the right way to tackle and hit from an early age (and what's going to be called a penalty)-- plus they'll be more effective at actually stopping the offense.
I miss the intimidation factor, but it's resulted in better overall defense and fewer injuries
And you can still intimidate, just be prepared to be flagged for it