Probably just means he doesn't want to. Odyssey owner here with 150K, never had valves done and it's a nice quiet engine. FYI on top of the Asian TKH002 kit, do plugs and thermostat as well with a couple gallons of coolant.
Generally because it is quiet doesn't mean much, tight valves are always quiet. Intakes usually get looser from wear and exhaust tighter due to seat erosion. At 100K its generally not a bad idea to check them, that being said...
This engine uses aluminum heads so valve clearances actually increase when the engine is at operating temp the exact opposite of cast iron heads which leaves sort of a safety margin against burned valves.
These J engines seem to hold the factory adjustment well for a long time, at 100K I would tend to leave a quiet engine alone, unless compensated for properly depending on the ambient temp the adjustment is made at there is a good chance it may end up being noisier that it was before when at operating temp.
This chart is by Crane and is in no way applicable to all engines, it is just an example of temp compensation for aluminum and iron engines.
To do this job properly takes skill and experience, not just jamming a go/no go feeler gauge in there and calling it good, it many times isn't.
Cold vs. Hot Lash
Block Material | Head Material | Lash Adjustment |
Iron | Iron | Add 0.002” |
Iron | Aluminum | Subtract 0.006” |
Aluminum | Aluminum | Subtract 0.012” |