If a large amount of unused receiving addresses were accidentally revealed (say 50 or so), is there any risk to the funds that may be stored in that wallet? Assuming the revealed addresses remain unused. I'm wondering if there's an increased risk of reverse engineering the private key if enough public addresses are known.
Public key or address are generated from one way hash function with SHA-256 encrypted algorithm which are meant to be public and there is no risk in exposing them unless your seed for the wallet is compromised with hackers.You can generate as many address like bech32,P2SH,P2KH address for different purposes so it doesn't matter.There are so many dormant bitcoin address lying there with thousands of Bitcoin in them but nothing can be done as only the owners possess the corresponding valid private keys and digital signature to spend the funds with them.Reverse transaction is not possible due to one way hash function of SHA-256 and Rimped-160 algorithm which provides security of funds in your wallets.Moreover the technology is not so developed at this time that you can make reverse decryption with quantum computing also at this time.So the answer is simple
"NO".