With all due respect, I really can’t be bothered to explain this again and again every single time the topic comes up. The issues are well documented at this point. It comes down to compression efficiency, hardware/software support, and data integrity. I do encourage you to do your research on the differences between them, which go beyond their capability to losslessly compress PCM audio, but if you are happy with what you currently have then maybe it’s not a tree worth barking up.
Since ALAC as it currently exists can not be considered an archival quality format, I personally will not be using ALAC for any reason. If Apple ever decides to support FLAC like literally everyone else in this segment of the market, great. That’s what my archive is remaining as.