With most fixed residential users having their modems on 24/7, there’s more incentive to simply keep renewing the lease. Why would you risk potential service disruption to your clients?

Potentially.

I don’t know about NZ (or wherever you are), but IP addresses for residential access in the US don’t really change all that much. It’s… concerning.

You do have a point, but… It’s not for nothing. It’s to hurt the predatory ad industry. And what you give up isn’t much: your IP address and likely the referral (so they know you visited website X that was serving their ad). It’s up to you to decide whether that’s an acceptable privacy cost to conduct this kind of guerilla ad warfare.

It would be cool if it could somehow integrate to a VPN and only do that while the VPN is active. I don’t think it’s possible, though.

edit: Just found out from their FAQ:

Does AdNauseam respect the browser’s private-browsing/incognito modes?
Yes, AdNauseam does not collect or click Ads that occur on pages loaded in private-browsing or incognito windows, unless manually enabled by the user.

There’s Servo too. So ladybird can crash and burn for all I care.