Do PDF menus on restaurants’ websites make the site not fully accessible?

I'm a UX/UI Design student working on a competitive audit. I'm checking the accessibility of the websites with a screen reader and noticed that restaurants usually have a PDF menu which is not compatible with a screen reader (but in some cases the screen reader can read it). I understand the reason why they have a PDF menu but If I was blind, I would love to hear the menu too.

Any opinions?