That sounds like people being just idiots overreacting rather than anything based on reality, one day when bismarck HM came up in roulette we had 2 bards and one machinist and there were no problems. Also I can't imagine that having 2 bards/machinists would hurt you to such an extent that you can't pass a dps check.
So because you managed a relatively easy dps check with some mchs, they don't seem to have a lack of dps to you right?, I think parsers and the huge thread on mch would like a word with you.