I cannot confirm this. but sometimes, what makes the whey not suitable for halal use is the artificial flavouring thrown in.
yes, whey derived from soy lechitin milk yadaa yadaa yadaa. seems clean huh? but the flavouring is the issue.
artificial vanilla flavouring can contain human hair. recently, from urine of beaver. vanilla extract contain alcohol too.
as for artificial chocolate flavouring, alcohol may be used as well. so yeah. we cannot just look at the source & process of whey alone..
Whey Izzit Halal !, 100% Whey Gold Standard