At the moment, there's undue advantage to the home team in the 2nd leg if after 180 minutes there's a draw. They get an extra 30 in their own stadium with their own crowd. The only way to circumvent this is to have one-off games in neutral stadiums, just like in 2020.
Had it been the other way around, we'd all be crying foul (pun intended) about why one of the teams gets potentially 30 minutes more game time in their favour.
Also, people already deciding that because it's getting "americanized" with the super bowl analogy and whatever... I don't see what's wrong with it? All you hear about it is circular logic, "it's bad because it's bad" kind of conversation.