I mentioned that interpretation very briefly in my post.
If EFF had continued to be better at political neutrality, I'm sure many observers would have been surprised at times that it declined to take positions on some of the hot issues of the day. That hypothetical reticence could have been interpreted as cowardice or irrelevance, or as saving up political capital to really focus on a smaller number of more fundamental issues.
For example, I have an ill-formed notion that EFF might be more effective in fighting against age verification mandates right now if the organization were seen as less leftist. Among other things, this is because there's one narrative where age verification is something the right wants and the left doesn't. I say "ill-formed" because I haven't been close to this issue and haven't seen exactly how various audiences have parsed it in practice.
The culture war part of this question is how good or bad it is when it's easy for young people to talk to strangers in spaces that aren't overseen by adults (or approved by their parents). I guess forms of this issue are possibly among the most divisive questions in the world.
However, you could also look at questions like online anonymity, privacy, data breaches, competition, ad targeting, decentralization, FOSS, and user control of technology, which are all being impacted by these measures. EFF cares about these things a lot and has cared about them for a long time. I would hypothesize that some of those concerns are now getting dismissed by audiences that think EFF's "true objection" is anti-parental-control and that the other issues are just noise. Again, I haven't been close to this and I'm not positive that this is how it's actually playing out.