It's critical to have at least a couple hundred jam-free rounds of the carry ammo through the gun so you know you can trust it. If bulk pack ammo is the only way that's possible in the current availability situation, it makes more sense to carry than a more dynamic, higher tech load with only one 20-round box available.
The generic JHP's are all "old tech," but many of them worked very well in "the old days," such as the WWB 230 grain JHP in .45 ACP. California Highway Patrol was happy with the performance of standard copper-jacketed lead JHP 180 grain subsonic .40, the general configuration of bulk-pack .40 JHP today.
Reliability is the number one non-negotiable priority in defensive ammo selection. If bulk pack is the only way that's possible due to availability and/or budget considerations, I'd say go for it.