What are some strategies a platform like this can take against spam or influence bots? Tying real life identities to users would certainly limit that(though identity theft and account selling could still happen), but that adds friction to joining, poses security risks, and many people might feel less comfortable putting their opinions openly online where backlash could impact real life.
I'm assuming it's equivalent to lobste.rs implementation: https://lobste.rs/about#invitations
The cost of this is adding a ton of friction to joining.