I think there are two notions.
If it's the output of a charger, then that is fine, it's always going to be charging, just might be slightly faster with the higher voltage. Battery doesn't care, BMS probably won't be upset if the ripple is somewhat sane.
If it's the combined effect of charger + inverter load. Then there is the ripple the charger wants to put in as a source, and the ripple that the inverter wants to put in as a load. This ripple may be enough to continuously charge and discharge the battery which will cause extra charge/discharge chemical reactions to occur. I was too lazy to download the PDFs but from the abstracts it seemed like this is what papers are concerned about. Now what would be interesting is, is the effect of this different from counting these as regular cycles? Or, is there a concern that it's not possible to count this correctly (BMS not sensitive enough? frequency of ripple higher than the sampling frequency of the ADC), or the rapid cycling has a different chemical consequence. Too lazy to read and not a material scientist :laugh:
And this is also what is a problem for power supply capacitors - they're being exercised continuously from charge moving in and out, and that results in heat / chemical degradation.