I think they introduced the programming GCSE the year after I did my A-Levels
I was teaching the IGCSE, to students all over the globe.
you can JUST learn the programming bit
But NONE of the resources which have been provided to schools do it that way - they ALL use OOP. If that's what your faculty has chosen to use, then that's what you have to use. It comes back to what I've been saying all along - the schools are dictating to the teachers what they are to teach, and it's NOT based on what's best for the students educationally, but what has the least admin overhead for them. That's the stupid reason that I had to learn Python - admin concerns!
Trust me, the conversation never even gets that far.
We weren't! We were using repl.it (or something very similar). I don't know what the story was at other schools, other than many other teachers also wanted C# but had to do Python (it was when I came across this that I finally accepted defeat in trying to get another language in instead of Python. I wanted to start with Pascal and then do C#. In the end I had to do HTML and Python. i.e. the status quo).
We're supposed to be able to choose both languages, but school admins are taking away one of our choices.
I wouldn't do that at the same time as HTML - maybe later, separately. As I've said, as teachers we only teach one concept at a time.