They will be just fine. Flash storage. Better than CDs. Nor more temporary than the cloud or external HHDs.
With the Photo Stick you are paying extra for its back up software. I wouldn't bother.
Flash storage is now preferred over standard hard drives (HHD) because of no moving parts. No spinning disk. Still okay though especially if you need a lot of storage space on a budget.
Downside to thumbdrives is they are small, can get lost and not as robust an enclosure as an external drive.
If you don't need a lot of storage space check out an external SSD -
https://www.amazon.com/dp/B078SWJ3CF/ref=syn_sd_onsite_desktop_9?uh_

I've searched this topic but still don't get the general idea. I have an Olympus Pen and would like to try some older manual lenses on it and realize I need to get the appropriate adapters to mount the lens. Now, if I put the camera in Manual mode and set the lens aperture and manual focus, do I have to set the aperture in the camera to that of the lens. ISO in auto?? Shutter speed?? Or, should I be using Shutter Priority?? I'm confused as to how the camera interacts with a manual lens. Thanks for any help.
Gerry

I understand that pressing the shutter button halfway activates auto focusing and automatic exposure metering. This allows you to focus on an object and then recompose your shot ... and I do this a lot. I have recently been told that when you recompose your shot, even though you have locked the focusing function by holding the shutter button down, when you recompose your shot the automatic exposure metering is still active and adjusts to the new composition. This makes no sense to me. Why would one function (focusing) be locked while the other function (exposure metering) be active?? I could understand that you need to focus on an object, pressing the shutter button half way, and then turn the Auto Focus button on the lens to manual (basically deactivating auto focus), then recompose you shot, press the shutter button down again to activate the exposure metering, and then taking your shot working.
I also think you can go the other way and use the AE lock button. I think this process would be to focus where the final shot needs to be taken by pressing the shutter button halfway, press the AE lock button to lock the exposure metering function, then release the shutter button and focus on the object you want holding the shutter button halfway, recompose your shot and then finish pressing the shutter button.
Looking for some words of wisdom. And yes, I know I could go to back button focusing but that seems like a new world of pain that I haven't entered yet.
Thanks for the responses.