Your argument still doesnt stack up as the situations of the Pacific Countries you highlight are the same for Lebanon.
Lebanon rely on heritage players, so do the Pacific. Large migrant Pacific populations in OZ/NZ, same as Lebanese. The games in Sydney appeal to Sydney based Lebanese fans, same as the Sydney based Pacific fans. You're trying to find fault with Lebanon but not realising the same faults apply to the Pacific Islands.
The Cooks lost to Tonga in their World Cup qualifier, 28-8, that scoreline flattered Tonga as it was alot closer than what it suggests with Tonga only getting away with it in the last 10mins. Any other tier two team would've lost that game too so thats no blight on the Cooks effort and that was with a weakened Cook Islands side with only a couple of NRL players. The Cooks also beat Lebanon last year and narrowly lost to PNG this year so I wouldn't write them off so easily, especially if they could get their top players.
At the end of the day, Lebanon, like the Cooks need games, thats what it comes down to. Maybe if we changed the name of the Pacific tests to just mid-year tests will you see theres no harm in having Lebanon play in this test match as the Pacific Nations are still playing, so too Lebanon.
PS, the population of Samoa alone is almost 200,000, thats not including the even larger ex-pat Samoans around the world. Tonga is a shade over 100,000, once again, not including the large ex-pat Tongan population.