I made some calculation about how many anime with gynoids come out per year, on average over the course of some years. The trend is upward (a bit to my surprise), at least based on data back to 2010, but not much:
>1.5 ... 1.0 ... 1.62 ... 2.0
2016-2021 it's six shows, 13 since 2016 till now, between 2010-2015 it was only nine. 2016-2021 was a bit of a low with only one show per year. It went up to 2 shows per year from 2021 till now, and 2023 isn't over yet. This isn't saying much about the quality, though. And in some cases the gynoid is just a secondary character.
Luna Theme (Casshern Sins): https://youtu.be/Ozm_TwyyIHM
>It took awhile for me to accept robots can be made of flesh
I still don't. I guess the whole idea behind Replicants in Blade Runner was just that they are just artificially created human slaves, with an maximum life time expectancy and normally being sterile. Which I was never aware of, and my opinion on that franchise declined even more by realizing that. One big difference is, that robots are programmed and programmable. Also, they could have backups of their mind.
The big part of the idea about building robowaifus is in my opinion to not make them completely human and bypass laws in regards too humans, but also have the option to program how we want them to be.
Western entertainment is really bad when it comes to humanoid robots. I just went through all the few quite positive shows and movies which include a gynoid, and realized that in absolutely none of them is it normalized that the human (male) is owning her as his property. Also, in most stories they get destroyed at some point. Japanese shows are at least somewhat better in these instances. To be fair, her getting destroyed doesn't make the story bad. I like sad stories, and it can have a positive meaning with her sacrificing herself for some human or her love-interest/master.