Well really when people think of pokemon they think of the anime first
"First" is entirely unable to be proven on your part, but with that said, the anime exists as a promotional vehicle for the games and the rest of the franchise, so even if what you're trying to put forth were an ironclad truth (it's not, of course), it still wouldn't be the negative you're trying to paint it to be.
that being said the anime has a "Kiddy" reputation among fans of the game/people that havent played it yet
On the count of the former - "fans of the game" - so what? If they're fans of the games, chances are they've purchased more than a few of them, in which case, mission accomplished. Who cares if they don't watch the anime? They've given the franchise their money where it really counts.
On the count of the latter - "people who haven't played it yet" - who cares? Pokémon is what it is, it's not new and it's not sneaking up on anyone. There's zero mystery as to what the franchise is nor is it at all difficult for one to discern for themselves what the franchise is and what it offers in its various iterations. People who like it already like it and if someone has disliked it or otherwise stayed away from it for this long, good for them. No one cares. The franchise is supposed to worry about the people who
aren't buying its products? No. Not how it works.
in such, merchindise sale go down as a resulte of people not wanting to look "kiddy".
No they don't. What possible support can you provide for this point?
I also prevents the franchise from getting more fans as they too don't want to look "kiddy"
No it doesn't. Yet again, I have to ask as to what support you could possibly provide for this point? The point was made by someone else - if someone is old enough to actually worry about "looking kiddy" to the degree where they would actually elect to eschew anything Pokémon-related as a result, then there's a very good chance they're beyond the target demographic and no longer need to be cared about.
lasty the current fan base fron the 90's are geting older and are growing out the "poke phase".
What do kids and potato chips have in common? "Eat them, we'll make more."
Wait, that didn't work... ah hell, you get the idea, though. The "current fan base from the 90s" can get older and outgrow the franchise all they like. Good for them. Adios. Enjoy your passage through the turmoils of puberty. There are still kids and there are more kids on the way, all of whom will have no problem continuing to buy Pokémon products, now and in the future.
More kids+Less fans comming in+large fan base out growing it= down hill from my point of view.
And given that your "point of view" is based on flawed perceptions and logic that can be called "fuzzy" at best, I think it can be reasonably concluded that your point of view, as expressed by you, in this particular matter is just a wee bit skewed.