but you didn't say if you ordered that orange pill case from third party or you 3d printed it yourself?
I ordered it from gobrrr.
I have to say there are much better and smaller SeedSigner cases and I prefer them instead of this default option
Yep, but I thought the default would be a better option. Proved wrong.

Most people would just use default entropy generation that is not really random nor secure, that is why they decided to go this direction.
Which thing isn't random nor secure exactly? Pi's RNG?
urandom?
If you make any mistake during this process you can only blame yourself, not SeedSigner aka Rpi.
But, I don't blame them for my possibly less unpredictable entropy. Of course and it's my responsibility to ensure the dice is fair. But, you don't get to force me go with your way, just because you think it's right. This attitude is translated to a little disrespect, one might say, towards actual cryptographers who've studied more than you've done, and have concluded to using a CSPRNG.
Let me choose a "Use Pi's RNG" option, and if you don't recommend it, show a warning.