Yay. Another stupid rant that could have gone in another thread.
Last I checked, you aren't working on these games. Game Freak can do whatever they damn well please. You're also basing your little "facts" on very shoddy evidence. 4 out of...NINE starters support your argument. Not very convincing. Not even a majority.
Next, it is totally irrelevant that the few starters that have had dual types have physical sub-types. Fact of the matter is that the triangle CAN very easily work. Fire/Psychic, Grass/Fighting, Water/Dark works just fine.
The physical sub-typings were the only things that made sense with how the damned Pokemon looked and what they were based on. They couldn't have made Charizard Fire and an elemental type, as an elemental typing wouldn't have made sense on it. Same with Venusaur. Same with Blaziken. Same with Swampert. For all we know, the Fire Monkey's final form could have its brain bursting out of its head in order to be the Psychic type. The Grass Turtle could end up bipedal and have boxing gloves. The Penguin could become a Dark Yellow-Crested Penguin or some shiz. A POKEMON'S TYPE IS BASED ON ITS APPEARANCE AND DOMINANT ABILITIES. NOT WHAT MAY OR MAY NOT MAKE SENSE TO YOU.
There's some other stuff, but I'll let you have fun with this.
And please, people. Enough of the threads made for the sole purpose of b
itching and trying to make a very poor point. Chances are, it's been posted 509 times before.