There may be errors of knowledge and omission here and there but the gist of the critisims remain valid.
Somewhat akin to the "Spirit of the Law vs the Letter of the Law"
I have recently begun revisiting the Migration of an env hosted on Netware 6.5 to OES X (X = an integer).
The more I dig into what is contained in this can of worms the uglier it looks.
Of initial attempt at considering Netware to OES Linux was stalled by there being no filesystem audit for NSS when that filesystem type is hosted on Linux. (In hindsight this was a blessing in disguise)
The transfer of Filesystem Attributes from Traditional Netware FS to NSS was one of the CORE reasons we retained use of Netware. (Hello !!! Just in case anyone at Novell is listening).
For Novell to suggest OES Linux as a replacement for Netware and not have all the filesystem attributes benefits etc transfer from NSS on netware to Linux means "Your job is not done very well at all !!". The message becomes "Dear customer please relax your requirements OR switch to an NTFS Solution".
As you work your way through the other services that Netware provided that worked very well you see more of the same - the so called equivalent Linux solution is somewhat half baked or requires relaxed requirements on your part.
OPEN SLP is not the same as Netware SLP.
OPEN SSL is not the same as Netware hosted SSL
There are others as well.
As these caveats and accomodations start adding up and long time Netware afficionados start to say Lets go to Windows, it's just easier than having to deal with all these exceptions and quirks.
The issue here os one of ability to deliver or execute.