Policy around the number of snapshots on a given VM

We have a number of VMs with several (5-7) snapshots.

These VMs are left in a powered off state and serve as "golden image" bases for a Horizon virtual desktop environment.

We keep receiving alerts in Skyline advisor, warning VMs should not maintain more than 3 snapshots at most and only for short periods.

My queston;

If the VMs spend most of the time powered off, is there much risk in having so many snapshots applied to the machines? Or is there some other aspect we're unaware of that could cause issues?