Well, if we can get a more relaxed email self hosting experience with the DMARC enforcement, I'd say it is a good trade-off in exchange with freedom of speech, rather than accepting the risk of spamming.

These days, hosting a proper mail server isn't really that hard, thanks to Stalwart https://stalw.art/. I did it to my Talos Linux cluster located on LA and utilizing idle resources. It is pretty great