This is an awful mess, isn't it? Should it be 50 and 16 or 50 and 50?

Well, actually, no: it depends whether the platform the instances are to be installed on is a standalone server or a failover cluster. The only answer option that says it depends on anything is the fourth and that says "depends on the OS" which is of course wrong, but it seemed to me to be less wrong than any of the others.

Did the 50 50 or 50 16 question ever get resolved? Has the MS documentation been rendered consistent?

And, of course, should everyone have been talking about whether it's 50 50 or 25 25 depending or 50 16 or 16 16 depending?