A certain user has been repeatedly evading site quality controls by creating many new accounts to avoid question bans and suspensions. For more background, see the following Meta posts that have been made about this user: What's going on with the Russian etymology questions?, Regarding the Russian etymology questions (Linguistics and Latin SE)

I was confused about why an IP ban hasn't kicked in yet. It looks like IP bans might be rarer than I thought, but regardless, I've never seen this much continued activity from a single identifiably disruptive user before, so I thought that moderators had some kind of ability to proactively prevent users from just making new accounts and continuing to post questions.

Obviously, this user's posts have been flagged to draw the attention of site moderators. I was wondering whether any Stack Exchange employees are aware of the situation, and whether there is anything more that could be done to reduce the problem of this user posting copious amounts of mostly unwelcome questions about etymology on sites across the network.