As others said, the answer is no. But I’d like to clarify that relayed traffic is end-to-end encrypted with TLS. You shouldn’t worry about relays eavesdropping or modifying your traffic anymore than you’d worry about TLS without the X.509 PKI being broken.
Agreed, that’s why I don’t mind transferring pictures over the internet. However sometimes even TLS gets broken, so I’d rather keep my credentials behind closed doors Even if TLS 1.2 is broken 10 years from now, someone might have stored my data somewhere.
Then you shouldn’t use internet in general, as credential are only useful when authenticating with remote systems that happen to live on the internet, which happens to use TLS. If you were in the business of recording data and in 10 years recovering credentials, you would surely target ISP’s or large government websites rather than some relay server which carries questionable value traffic.