Yes - charts are good.
Sure - guys can sail without them.
Notice the little marks on charts indicating shipwrecks.
If you don't want to be one of these marks - get paper charts that matter to you. Yes - cost and storage space is a consideration. It's true that "outdated" stuff can be found - cheap. Unfortunately, ya can't board ships (us) and trade for charts anymore. Still, pros toss good (2nd to latest version) charts. 2nd hand chandlers deal them.
Be happy to create space for the charts you have for your voyage. Know the limitations of deciding to go without large scale stuff. Having options is good
Carry what applies to a leg of your journey. How many can vary drastically. I've used 40+ for a 800nm trip. Same distance - 1 chart.
Harbor charts only matter if the harbor might matter. Large scale charts of planned stops, possible safe harbors, and unplanned options.
Cruising chart books can be adequate - used properly.
Chartplotters are cool - they do not replace paper! It's not ok to navigate without paper charts.
Which charts to carry is the navigators choice (ok- not always).
Thinking the bad stuff happened because batteries, electronics, software, GPS, lighthouse, etc failed is not an option.
Yah, paper charts are good. Correcting 300 can suck.
one of you gets that.