IMHO the problem is at another place.

It's OK that ->import() is not required to exist inside a package (or let's say I doubt that this can be changed in a backwards compatible way).

But trying to call a method on a non-existing package could fail. I.e. use could check if the MODULE-name exists in the right capitalization after require.*

But for reasons that I do not understand yet does require auto-vivify the misspelled package.

  DB<7> require DaTa::DuMpEr

  DB<8> x grep {/dumper/i} %DaTa::
0  'DuMpEr::'
1  *DaTa::DuMpEr::
  DB<9>
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*) or if it exists twice in different capitalizations.