Are pen drives/flash drives fine for my use case?

So I work with LLMs and ML models, my machine will run out of space in a while hence I was thinking of buying external storage. My main aim will be to store my ML models on there and be able to use them when I need to(basically daily) by plugging in the flash drive.

I've read these can be unreliable and are meant only for data transfer.
I likely won't be storing anything irreplaceable, if I have something like that for example, would likely store a copy on Google Drive as well. Would you say this is fine for me or should I look into something other form of storage?