Sounds like a cool option!

I’m not an expert on cold wallets but the 2 concerns I see right now are:

Reliance on centralized software, if the wallet can only be used through one centralized software and that software is compromised then it could be a problem.

Seed phrases being cracked by computing, as computing gets better I feel like it may be able to crack these shorter seed phrases (12 words) and get into wallets.

I’m sure there are some other concerns that I should be aware of but those are the 2 that come to mind.

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Discussion

In theory, there's logic to the quantum threat that everyone's worried about lately.

But keep in mind – if 128/256-bit entropy ever becomes vulnerable in the future, there will be a ton of problems and questions. Probably, as technology advances, the same progress will be used for protection in parallel.

On the software side, short version:

always stay vigilant about what you use, where you click and what you install. Open-source clients are preferable,

and that fear of potential leaks is actually super useful – it keeps you safe.