Does all good "heavy" music have breakdowns?

[I spent the winter writing songs about getting better]

I'm surprised it took me over 10 years to figure this out, but basically yes. Of course some bands do breakdowns in kind of a unique way (Ampere being an obvious example), but all "heavy" music without some type of breakdown is typically garbage. The only exceptions is some sludge/drone stuff.

[Okay, maybe Mike Johnson is a competent parliamentarian.]

Define 'heavy'. Define 'breakdown'.

[Lambsbread]

Nope. I consider The Dillinger Escape Plan heavy, but I they don't really use breakdowns.

[Starbucks Union Thug HokeyPuck]

No, of course not.  This is far too broad a generalization.

[H.E. VOLODYMYR ZELENKSYY]

Define 'heavy'. Define 'breakdown'.