I agree, however it would be of no added complexity for their visitors, if Watchman self-hosts his email server, had a contact form on his website and also offered a Simplex address with the advice, that Simplex is easy to install and probably the most secure way of contacting him.
As for self-hosting the website and not using Google Fonts or cloudflare that's even more of a no-brainer as his visitors would not even notice that but still benefit from them not being tracked on his websites.
So I do agree with nostr:npub14slk4lshtylkrqg9z0dvng09gn58h88frvnax7uga3v0h25szj4qzjt5d6's points.