"Then we don't even have to debate the fact that this game is tailored towards teens with tremendous amounts of time (and money) on their hand, and attributes those with more time better chances of winning simply because of that; time and money."
You are right, we don't have to discuss it because it fairly obvious. People with more time on their hand, will have a huge advantage, like with any other multiplayer game. Obviously the p2w aspect sucks, but that's one way for people with less time (30+ with steady income) to make up for that missed time, and that's exactly what EA is trying to do. Let the kids grind out the game, and let the older ones buy into it to make up for not having that much time anymore.
"I can play CS at 2500 - 3000 elo just fine without having to put in more than a couple of hours every week and I come off rather well. I never had to invest more time or money into that game to be competitive in the better end of players (in my opinion, some will disagree but factually most players are not at that rating)."
And why do you think that is? because you've spent more time in the past, so you built a certain skill level base that helps you to play well even if you're not putting in huge amount of times, but at some point, you surely did right?
"With FIFA thats impossible, unless you are incredibly talented and can go against 90+ avg teams with your own team of scrap players. Not to mention the amount of time required to actually setup teams and adjust tactics etc., and you have to do this based off of 2 - 3 hours a week when you find the time to play. Moreover, you don't want that time to be laid into acquiring players on the transfer market, an impossible feat without the money. You kinda just want to play."
Yea, you will most likely never be able to afford the biggest and best icons, but if you play your weekly Rivals games, and maybe scrape together a couple of wins to play for Gold2, you will have decent rewards each week without having to spent a massive amount of time.
"I get the incentive that its cool to make your own teams. I like that idea as well, but the fact that new IFs and what not enter the game on a weekly (or daily?) basis makes it incredibly hard to keep up to pace when you simply dont have the time. "
What EA does with constant new promo releases is to keep the player base entertained and hooked to the game, if they wouldn't do that, the backlash would be huge.
Overall we can conclude, the game is not suited for you to play super competetive, but if you focus on having fun and trying to work towards your dream team, it's still worth playing in my eyes.