That's how I view the term. It seems personal, like many other parts of a person's identity. I myself am an ex-mormon and don't like the term lapsed mormon for myself because I had issues with the faith and tried to work through them before willfully breaking the rules. There's nothing wrong with people doing it in a way that is better characterized by lapsed but it would be a bit misleading to portray how I left this way. That said, there are people who are less lapsed and left more deliberately than me.
People can call me whatever they want, betrayed would be the best way of putting it. Learning all the lies hidden by the church, and all the doctrine that was told one way but happened another, etc...that's what made me leave. I can't take bullshit, and I'm ashamed it took me so long to see. One read of the CESLetter and I was over on quitmormon.org sending in my resignation.
I'm fascinated by CESLetter. I myself don't get it because each time I start reading it my eyes glaze over because I learned the most salient things years ago. Seeing others get into it though, it seems to be an example of drinking from the proverbial firehose.
I did quitmormon as well, back in 2017. I actually regretted it and was even mad at quitmormon for a time for making it so easy, but I've been at a place where I no longer regret it for a couple of years. And I guess that is where I feel betrayed by the church. If not for Prop 8 and the 2015 policy and the more extreme tax dodges I could have a more relaxed take on it. I still do have a relaxed take on Mormonism.
