Most “bass synths” are general-purpose instruments with a sub-shaped oscillator in the mix. Filter, saturation, and EQ share one path. Brighten the mid and the sub gets thin. Protect the sub and the mid goes dull. You either build a routing mess or stack plugins to do one job.

Other synths write the rest of the track extremely well. This is for the voice that has to hold the arrangement down and still have a throat.