I respectfully disagree with that final statement. At least, my opinion on it differs from yours. Which is fine.
We're in our first starter home right now, and we definitely have plans to make changes that will potentially drop its resell value. Why? Because we live here now, and probably for the next decade, and we want to fix things that annoy us.
Namely we plan to knock out a wall to make the kitchen/dining more open, and it'll flow better into the living room too. But then it goes from a 3 bedroom house, to 2 🤷♂️
My in-laws just built a house, and I kind of hate it. They even dislike a lot of things about it, but everything they did to build that house, every decision, was 100% about resale. I don't even mean big stuff, I mean every little detail. Like they're living in a showroom. That's just not for me.