I’m having this “but you’ll probably never need this feature anyway” problem all the time. My old scope (tektronix 314) needs to be replaced (wrong, needs a bigger brother for assistance) and what’s available either is crap, too big (heavy, bulky), needs a computer to run (usb scopes), is a computer runnings windoze (including virus scanner) itself (lecroy DSOs) or is just way too expensive for ‘just a hobby’.
I’m not saying this ‘toy’ in itself is a bad thing, it surely is way cheaper than the lowly tektronix TDS2xxx series or the rigol ones. But it could not even be used to look at all the signals the arduino can produce (e.g. high speed SPI). I take it a real scope is a thing to last at least 10 years (and should definitely not run on windows). So $1500 isn’t hat bad.
It may be just the perfect thing for beginners who will never need anything above audio frequency (expect for the smd soldering), but not for me. I’d buy it just for the fun of building it and then sell it or give it away. Once you have tasted the ‘real thing’ (good scope) you’re spoiled