Generators for Freezers

So I purchased two EcoFlow generators specifically for keeping my freezer going during outages. I’m seeing prepping videos on TikTok saying use up your freezer foods now because generators won’t be able to sustain the freezers because freezers draw too much juice. I think I’m going to unplug my freezer this weekend and try plugging it into my generator to see how long it will go. Can anyone tell me if this is true about not being able to rely on freezer foods during long term outages?