That's a totally seperate issue though. I'd never use a compressed format during production because what's the point of using CPU cycles to constantly decompress something when you could use them to run more plugins. However if your machine is quick enough to work with the compressed files on the fly and the other software you use has no issues working with Apple Lossless then there's no reason grounded in reality why it would be a bad idea to use it.
This "trust" thing you keep referring to isn't based on anything tangible, it's just a badly formed opinion.
Lossless audio compression is basically taking the raw PCM data and zipping it up, except the algorithms are tailored for audio data and hence achieve better compression rates. If you don't trust Apple Lossless then I hope you don't ever do something as crazy as use archives to send multiple files around to people.