Maybe, even probably.
Assuming a student diver is familiar with drysuit diving, standards for PADI drysuit specialty certification require completion of knowledge review worksheets and two open water dives in which the student demonstrates competence in descending, neutral buoyancy swimming, ascending, holding a stop, and equipment removal and replacement. (Confined water training is required only if the student has no prior drysuit experience.) If the PADI instructor simply went on a dive with the student to check that s/he really did know how to dive in a drysuit but failed to check the diver's background knowledge (by way of the knowledge review worksheets), or did just one dive, or didn't require the diver to remove and replace his/her equipment, the instructor would be cutting corners by violating those particular standards.
Assuming a student diver is familiar with drysuit diving, standards for PADI drysuit specialty certification require completion of knowledge review worksheets and two open water dives in which the student demonstrates competence in descending, neutral buoyancy swimming, ascending, holding a stop, and equipment removal and replacement. (Confined water training is required only if the student has no prior drysuit experience.) If the PADI instructor simply went on a dive with the student to check that s/he really did know how to dive in a drysuit but failed to check the diver's background knowledge (by way of the knowledge review worksheets), or did just one dive, or didn't require the diver to remove and replace his/her equipment, the instructor would be cutting corners by violating those particular standards.