Nah, how many people are using Twitter without being logged in compared to how many people legitimately change every link they receive to Nitter?
I used the 'redirect to nitter' Firefox extension and Android app but it got quite unreliable and nobody else that I know uses nitter at all. I think Nitter users would be a tiny, perhaps even immeasurable minority compared to casual readers that now are incentivized to either log in or fuck off (but... FOMO).