Alternate revenue source to keep them in business as they probably hemorrhage customers due to being maybe the least secure password manager ever? I have to wonder how they have any customers left at all at this point

No, Klue is a competitive intelligence tool for sellers. You use it to keep track of "battle cards" (i.e. if they are selling a deal vs. 1Password, sales rep would go into Klue to see what the advantages of LastPass are vs that specific competitor).

It's a purpose specific knowledge base, not a data broker or any sort. But it will surely have information of who you sold to or tried to sell to because of it.