Your blinded by your hatred of wrestling and structure. All the stuff you mentioned happens in good defensive teams in today’s game. Charge downs are less prevalent but I think that’s more to do with not wanting to give the other team another set of six unnecessarily. Intercepts being fewer I put down to players being smarter with the ball, not throwing as many dumb passes as back in the day, but even still there are plenty of both charge downs and interceptions.
But people rushing out of the defensive line looking for the big play is still very much in the game. Hell just look at the grand final, Cameron Smith (one of the best defenders in the game) races up looking to make a big play and it backfires and it gifted the Cowboys their only try. Look at the 2016 gf, Wade Graham kept taking the time away from Cooper Cronk by rushing out and putting constant pressure on him taking his time away, and while I hated it at the time for obvious reasons, I can appreciate the great work on defence that Graham done.
Defence is not boring, it’s just how you choose to look at it