This is true as well. Back in the day when it was common practice to require the optical disk to be loaded in the drive, just to prove you owned the software, to allow the game to launch. Well, if you know anything about optical drives, they wear out.
Yeah, I know, we were all surprised when our optical drives died, especially if they died within only a year or two of use, but it happened, they just sucked, what can I say? Anyways, it was common practice for us gamers to install no-cd cracks.
We owned the games, we had the official disks to prove it! But, it was always a pain to get the stupid disks out, and insert them just to play a game. And like I said, disk drives wear out so ya. We would install these no-cd cracks.
And then all the sudden, the anti-virus software would pop up and say, detecting malicious software or detecting trojan virus! All in RED text, like OMG the sky is falling, the sky is falling.
I guess what the biggest concern was, that the tactics that no-cd cracks used to get around having to insert the disk, was perhaps the same techniques that virus's use, and thats how they always got nailed by anti-virus software.
I can't tell you how many times I thought there were real virus's, and let the anti-virus software remove my no-cd cracks just over the thought it might be true. Then when Steam gaming became popular, everything got better, no longer bought games on optical disks!
When I bought my new computer, I knew it didn't come with an optical disk, but I bought an external optical drive, just incase I ever want to load up any old software, games, or make a burned disks for whatever reason, but the likely chance of that external optical drive getting used is slim anyways.