Wow all this useless arguing about warezing games so you can be lazy and play a warez dump on a WiiU or a Wii because it's too challenging to plug a system in and exert oneself to put a disc into a machine and push the power button. Such hardships.
Gamecube is borderline old, the last of the non-HD era in general (yes I know Wii was after and a hold out) but is also is in the realm of where 3D hit a more than acceptable level to not look awful and dated too like the generation before.
There's absolutely nothing wrong with using a real disc and a real system as intended as current hardware should still more than suffice to run on a modern TV unless you unluckily bought some piece of garbage TV that can barely struggle to handle an RF or RCA signal plus processes so much garbage in the background it inhibits play with gross lag. The last couple TVs I've had around I looked into before buying because I knew of this going into it, and my games look nicer than a CRT but a little less crystal clear as using Dolphin to run GC ISOs, a happy middle ground, and with no display lag problems. I see no reason to justify using warez and corner cutting when things can be used just fine as intended.
...and I do agree, it's a shame they got piracy jitters as that dumb 1.5GB mini-dvd they went with really screwed them in the last 2 years of the system when it got cut out of a lot of sequels to great games it did receive earlier on.