I agree that the gatekeeping isn’t a good thing, but you should learn at least the basics of the CLI. It will give you a better understanding of what’s going on behind your GUI and makes troubleshooting and fixing problems a lot easier.
Definitely not required but it is absolutely a skill worth having.
That’s not a bullion coin, it’s just a pre-64 quarter. It’s about $20 in silver, depending on spot price.
I collect coins, not silver, and these are not special in any way. I sell them for melt value to buy better coins.