I know kids who do not know how to operate the time base and vertical scale, nor the trigger, etc... They just hit the auto set and hope everything works out.Isn't that just a modern advanced version of "beam find"?
I still love my two Tek 2246 with readout and use them every day, digital scopes are very useful when I need to prepare measurements for articles, presentations, etc.
For new DIYers, I would recommend a better quality dual channel digital scope with a generator such as Keysight or R&S or similar (it's not a smartphone that you replace every year), and it's easier to publish problematic readouts on the forum and ask for help.
Also, I do agree with you that Keysight makes great scopes, however, they are prohibitely expensive, even the simplest, which if I am not mistaken has a 70MHz BW, costs above the 1K range, one with a generator as you suggested is probably above 2K, which is very distant from a 350 USD Rigol