I'd be happy to elaborate.
When I said the EIP makes it worse, I mean the incentive to have these conversations will be even lower, as comments rarely receive 16 steem upvotes, so even if your every comment is read and appreciated by the writer you're communicating with, the new curve will reduce the value of their appreciation, which is enough of a feel bad that I'd expect no one to really vote for comments, which is a pity.
The goal of the EIP may not explicitly state that it intends to de-clutter the chain, but that rewards curve is meant to force accounts to group their behavior together. Which means small positive contributions will receive even less, which means no one looking to maximize their return will engage in one-on-one conversations on-chain. It also means outliers, people who don't follow or lead the pack, will give less value proportionate to their SP. It'd be nice to avoid a system that discourages outside-the-box thinking. Ah, well.
And also, that curve IS meant to de-clutter the chain. I mean, it's talked about as keeping them from taking rewards, but the effect is the same. And for a new user, or even an old user, this concept of fighting spam is hard to disconnect from the idea that my $0 comments are the spam they're talking about.