Honda are one of the few manufacturers that still use the valve train type where you have to adjust them and no hydraulic lifters. Due to their tight tolerances and generally good materials adjustment rarely has to be done according to schedule.
Well, almost all Asian manufacturers dropped the hydraulic lash adjustment on their engines years ago. Most Honda’s can be adjusted as part of normal maintenance. Toyota and Hyundai use a shim and bucket setup that usually requires removable of the camshafts. I think Ford uses direct acting mechanical buckets on the 3.3 V6 which aren’t self adjusting either. I believe BMW still uses this setup in some engines too.