why do people complain about player height so much😂 tall players are good but you can’t expect everyone to be 7 foot tall
Because people like to complain. :) I mean, these are the actual players  - if they are good enough to play in real life.......
Although, I will say I really liked the What If? challenge where Flutie was 6'9" - that was hilarious.
People will find something to complain about if the game was perfect so that is the biggest factor. The reason with height is a short WR or TE gets covered easier by tall DBs and LBs, a short DB or LB gets the ball thrown over their head too often for a TD or large gain, a short QB get the ball batted down more often when he throws it and a short defensive lineman bats down less balls and has shorter arms to get sacks and tackles while engaged with a blocker. All other positions height doesn't matter as much such as HB, Offensive line, and K/P. People make the problem out to be worse than it is though. I do have hard floors for those positions I have never done well with a WR or DB less than 5'11. I really prefer 6 foot at those it to me is the sweet spot of height and maneuverability. Tall LBs are a bonus but ill take short one and I will take a QB any height.