@compuguy Twitter is now fully tolerates hate speech, so I see zero positive value in these bridges/relays. They're going to be one-way by design, so it's not like you can meaningfully interact with relayed Twitter users here anyway.
I'd expect a net negative effect on the Fediverse. I recommend admins find and suspend every relay/bridge they can find.
Mastodon has enough federated users to generate good content without importing content from elsewhere.