I've been watching the show as well.
The first few episodes were great, I loved their song choices and their presentation of them.
I find as the show moves on, the writers are just trying too hard to make it relatable to absolutely everyone. They've changed the definition of what a glee club is.
My understanding is that it's supposed to be an a capella group, with limited accompaniment, while each episode they're adding more and more instruments.
I don't know.
My other gripe is that clearly everyone is lip-synching when they do sing. It would have been nice to have actors that could sing as well.