Nobody flying for real tracks NDBs, in the current century (airlines certainly don't).
Every approach instrument approach predicated on navaids, the pertinant navaids are tuned, identified and monitored regardless of the level of automation in use. It is true that the level of monitoring past the FAP can vary depending on FMC versions, type of updating etc, but the basics are still required.
And of course if the ADF says you are OK but the FMS says you are all going to die, the FMS is disregarded.
If you T,I,M the navaid before starting the procedure whilst flying the FMS track then any discrepency should be obvious prior to descending below MSA.