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Further to the comments above, I believe it is completely inappropriate for Twitch to allow someone to add individuals as a mod without confirmed consent. The ability to do this can exacerbate parasocial relationship issues, eg "oh but this person I have come across has a connection to me as my mod". Assuming you take the time to remove yourself as a moderator, a notification occurs in chat which can be perceived as "interaction". The individual is not prevented from continuing and can immediately re-add you.

I agree that after a channer owner /mods someone, that someone should need to accept the role.

I understand that we can /unmod ourselves in a channel, but this prints a system message in chat, eg. "user has removed the moderator role from user" which can draw attention to it. Not always wanted.

In addition to this, if a viewer blocks a creator, the viewer should automatically be unmodded in the creators channel. This does not currently happen.

You can just /unmod yourself.