Hey Folks,
I wanted to chime in on this after having my trunk also not operate properly and needing to crawl through the back seat a handful of times to open the trunk. I ultimately replaced the switch with two buttons as the wide button to release the trunk wasnt working properly. Here is the old switch and part number for a new switch from hondapartsonline.
Link HERE
Before i replaced this switch, i took apart the existing switch and discovered that the trunk button is just a small button w/ a flat wide brown piece of plastic allowing you to engage the small button in a wider space. The brown piece of plastic has lost its shape over the years and was preventing me from actually engaging the smaller button. (facepalm). This is why i couldnt actually open the trunk...
I reinstalled the original switch and used the small button directly w/o any issues for a couple weeks while I wanted for the new switch w/ seal to come in.
I think if you wanted to save a few bucks, you could make a small incision in the rubber seal over the trunk button and use a small wirecutter to break the brown piece of plastic in half and remove it from behind the rubber seal. From there you could tape up or glue up the rubber seal and press directly on the small red button. Although the button is a bit smaller, this would allow you to continue to re-use the button.
Good luck and thanks for sharing all the learnings here.