Two of my friends made all the tables in their thesis using the
tabu package. Luckily, I personally did not do so.
Yesterday I learned that it is actually very dangerous to use this package, and that they might not be able to compile their documents in the future anymore:
When I informed them of this they were – rightfully – upset. Although this package is "dangerous" I can still find 456 results when searching for
tabu. This suggests the package is widely used.
My question is how we should best handle such cases. Should we add a remark to answers of questions related to
tabu, saying it might be deprecated very soon already?
Or maybe even on a higher level, do you think a package of an author who does not care about his users and does not care if their documents break in the future should even be on CTAN? Clueless users might just find this attractive package and it might only dawn upon them too late which choice they made.