Wireguard yes or no

I’d like to ask a question about Wireguard between your block producing node and relays.
If I understand it correctly on one hand it adds securing to the communication, but on the other hand it requires you to open a port that would have been closed otherwise.
What are your opinions and do you use wg?

Why not create a policy that allows access to that port, only from the IP Addresses of the relay?

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