Thanks for spreading the word. Much appreciated!
I won't go into detail about my personal setup for my own security but you should generally not have easy access to your savings and you should make sure that if something happens to you, your loved ones will get your bitcoins. Google and you will find instructions.
YetiCold tries to make this secure setup fool proof, for non- to semi-technical users for example.
Seriously?

You talk about security then you send people to an unknown github to download software?
You pick amounts to tell people which version to use without even commenting on the fact that for some $5000 might be a years worth of savings and for others it's what they made last Tuesday.
You have statements like this in your readme.md (bold mine):
For example hardware wallets should never be used with a daily use laptop, but because this requires about an hour of work it is not part of the instructions
Are hardware wallets perfect? No, but telling people not to use one for daily spending?
And you have such other great quotes as:
The most time consuming part of Yeti is waiting for Bitcoin Core to sync with the network. With an SSD drive this can be done overnight, but if you have an HDD (old style) drive it could take up to a week.
That does not take into account internet speed, how high you can set dbcache in the bitcoin.conf file due to laptop ram, and other things. There are discussions popping up here from time to time about how long it can take. But seriously go to any of the download calculators out there and figure out how long its going to take with some slow ass DSL or 1M line that large portions of the world have. Not to mention the people with capped download amounts.
Oh and this:
However for smaller amounts it is cheaper, safer, and easier to use a single purpose phone using bluewallet.io than to use a hardware wallet so there is really no circumstance where a hardware wallet is appropriate.
Go search for the amount of cheap phones that come out of the factory compromised and how many crap noname phones are pre-infected. Tons of discussions about this too. Not even a mention about that.
Don't see a signing key / pgp signature for you / this project but didn't look that hard.
-Dave