While I am thinking about it and on this train of thought, for the longest time, I always hated the words "consent" and "enthusiastic consent" very triggering and I couldn't figure out why until recently and not for the reasons people may think.
Basically, as an autistic woman who went to an evangelical Christian school, I was constantly told stuff like "smile", "stay sweet", "fake it until you make it" and not show any negative emotions outwardly and the concept of enthusiastic consent brings a lot of that back because I constantly feel like I have to mask and pretend to be enthusiastic to get what I want even though masking is next to impossible for me. It also feels like the antithesis of what sex and true intimacy should be about which should be coming in as your authentic self, but I can't do that when I constantly have to preform enthusiasm every step of the way. A lot of neurodivergent people especially if they are on the schizophrenia spectrum like me have unusual affects which often means my emotions don't match my outward appearance and I have to tell a lot of people that because it often confuses them because I can be completely happy, but I have a distressed or bored look on my face. I do not outwardly appear enthusiastic or look like I am enjoying a sexual activity even though I am having the time of my life, but I make sure to let them know, but I know a lot of times, especially early on in relationships it does trip people up a bit.
I also think that enthusiastic consent doesn't take into account for the fact that a lot of people, especially women, have often been conditioned to develop a fawn response and not show any negative emotions. Constantly in Christian marriage and sex books women are told to appear joyful and enthusiastic even when they are tired and basically put on a mask even when sex is the last thing they want to think about so someone might appear enthusiastically consenting for the entirety of sex, but in reality, they really don't want it.
The problem is, how is the other partner supposed to know that the enthusiasm is genuine? I can see why a lot of people, especially men, are confused and maybe terrified at the prospect that an enthusiastic yes might not mean yes, but there is an easy way to tell, but it will take a lot of self reflection and that is asking the question:
"Do I come off as a safe person when it comes to rejection?"
In other words, do you handle rejection and constructive criticism and feedback from the other person maturely and respect the person's feelings and try not to convince or pester them or get angry or give them the cold shoulder when they say no for not just sex but mundane things in the relationship. Does their no matter in other aspects of life? Also, do their opinions truly matter to you and you don't just call all the shots in the relationship.
If you can truly answer yes to all of that then you should be fine, but if not you need to take a break from sex and have an honest conversation with your partner and work on dealing with rejection better until your partner feels safe saying no without any negative reaction.
This is also why I think when it comes to true complementarian relationships or those "tradmarriages" as they call them, authentic consent is not really possible because consent requires people to be on equal footing and someone being completely subordinate over another person is not equal no matter how much they try to spin that as equality using the same arguments racists used in the 60s. Even BDSM relationships are technically equal because the subs opinions and preferences matter as much as the doms and a good chunk of the time the people in these relationships are constantly negotiating and communicating in a mature manner vastly more than the average complementarian couple. A person who is constantly the "tie breaker" never works because when it is with two people (assuming you don't have kids or don't take their opinions into account on family decisions which I think you really should in an age appropriate manner if it is going to affect them) because the other person will never have their decisions made unless the other person agree with them so every single time the one person wins and the other person loses or draws and their opinions and wants no longer matter.