Not really, GA offers a lot more features than Piwik.

But either way, that doesn't stop ad blockers being lazy activism.

Well, then the sites should buy a service that gives them more features. If the existence of GA means there is no market for such products, then GA should go away.

I have no problem with lazy activism.

uBlock also blocked piwik last time I checked.

That's a pity. This gives me an extra reason not to use blocklists maintained by anyone but myself. (I currently don't use uBlock, but RequestPolicy + NoScript, but am considering switching.)