The only things I'm used to downvote are phishing links, scams (real ones not the ones people yell at when they don't like a project), identity theft (like posting the work of an artist and pretending to be that person), etc. In other words, publications made with the general aims of a con artist.
I don't know how daily free dowvotes work (how many an account gets, how the weight is calculated, if it uses SP, RC, or else) and even if I did, I don't think I would change my DV habits
Adressing what I sense was the spirit of changing the rule, I guess I could say that I've never felt enough concern with Steem pool's tragedy of the commons. And I would bet most other small users don't either, but the higher the stakes of a Steemian gets, the higher the interest in having a healthy ecosystem.