I believe apps like Google hangouts use Java/Need Java enabled. I think the commenter shiloh.enriquez on that Mozilla thread had a decent point in that many us

I believe apps like Google hangouts use Java/Need Java enabled. I think the commenter shiloh.enriquez on that Mozilla thread had a decent point in that many users just want the thing to work, won't necessarily understand or have the patience to understand and will move from FF to Chrome or IE.