I do agree that the devs seem to have found defining support/DPS classes pretty difficult. The damage debuffs on support songs aren't a problem for me, but with such limited opportunity to use them on top of the 3.0 DPS craze that Alex Savage brought I can see why people would think the debuff should change (as always, I'm not including For Requiem here because it's very powerful and always useful).
As someone who plays Bard to be a support DPS, its disheartening to be encouraged not to use your support abilities.
Personally I'd rather see Bard songs like Ballad, Paeon and Paean become more worth using in content outside of Savage (and appropriately balanced ofc) and I's happily accept DPS nerfs as a tradeoff.
As for Machinist, it\\'s a bit harder for me to say as I\\'m less experienced with it. I always saw Machinist as being less support and more DPS so maybe they could find some ways to emphasise this whilst still keeping the support through debuffs thing