If a project offers explicit support (even if only generic rendering) it still makes sense to contact them as likely a code change is warranted if a combination is no longer in OSM.
For example, if you search https://taginfo.openstreetmap.org/keys/office#values for "funeral_director" you'll see two values that probably mean the same thing.  If one gets consolidated into the other (probably the singular into the plural, to mirror "shop") then a code change would still make sense to reduce the amount of processing that happens to OSM data before display.  It doesn't matter that "office=funeral_director" and "office=funeral_directors" are very likely to be processed in the same way; if a tag "goes missing" I still need to find out why because it might have been renamed to an unexpected tag that I don't currently process (something or think means something else).