On some level I think you’re both right - this is roughly the problem that happened with email and spam.
At one point it was trivial to run your own Mailserver, this got harder and harder as issues with spam got worse. Places started black holing servers they didn’t know and trust, this drove ever more centralization and a need for server level monitoring/moderation because a few bad actors could get a whole server blocked.
We can know that bad actors will exist, both at the user and at the server level. We can also know that this has a history of driving centralization. All of this should be kept in mind as the community discusses and designs moderation tools.
Ideally, I hope we can settle on systems and norms that allow small leaf nodes to exist and interconnect while also keeping out bad actors.
It’s pretty hard for them to reach with the weapons they have. Storm shadows can do it but it’ll take several, and at least right now, I suspect Ukraine gets more out of using them to go after depots and generals.
Also, they get some benefit to threatening the bridge without taking it out. Right now Russia keeps soldiers and anti missile systems protecting the bridge. Once it’s blown up Russia can send those things to the front.
I’m guessing they’re most likely to take it out after they cut off the northern route.