Im new. Is the server respectful of vanilla design?

I finally decided to try out turtle wow and rolled a shaman. After looking at some of the content that the turtle wow team has made i am really excited to level for once. The thing that is a huge draw for me is that they keep in line with the classic design.

But... I have heard there is a cash shop that sells several things including mounts and transmog? I just wanted to know if people run around with transmog and mounts that stick out from the vanilla design?

I guess my tolerance is pretty low when it comes to stuff like that as i think it would completly ruin the otherwise incredible vanilla+ experience by breaking my immersion. When is see some flashy mount, transmog or glimmering effect it just really takes me out of it