Honestly I'm feeling no need to compromise any further on my wedding budget. Plus the additional existential  crisis going on.
That's interesting, why wouldn't you want to compromise on the wedding budget?
I don't feel it's fair to include my own home entertainment devices at my own wedding.
If you don't want to compromise on your wedding budget then you don't need to. This is your wedding and you have the right to set down rules that you want to be followed.
I'm glad you're seeing my point of view.
Moving on from here, I'd recommend communicating that with everyone trying to help plan the wedding for you. Completely shutting down could make things really hard for the wedding. Explain the type of budget you are looking for and what items can and cannot be brought to the wedding.