It's not performative virtue signalling to push back on a lesser threat just because you are not pushing back on the greater threat. The gov't has been very good at hiding the existence of these programs. We do not know much about PRISM, so there's less to go on. You need to push back whereever it occurs. We still have no idea how widespread this is. Not to mention, it is likely going on with google, facebook, instagram as well.
https://news.ycombinator.com/item?id=34026457
It sounds like most of this discussion is entirely driven by normative fancies rather than any actual knowledge of how these processes are already being run in the industry, let alone how the first amendment actually applies. For the latter, it would seem that a whole bevy of court cases undergird this whole endeavor:
https://reason.com/volokh/2021/07/19/when-government-urges-p...