I really don't think this is going to have the effect that X thinks it will have. I've always said that if XCancel and Nitter get taken down, I'm not going to suddenly decide to make an X account--I'm just going to stop reading their content.
Same for old.reddit.com. If they kill it, I'm not going to give in and create an account--I'm just going to stop visiting.
I agree. I think of these alternatives as off-ramps, not replacements. In 2023 I ditched my Reddit and Twitter accounts thinking it would be very difficult. Today, the idea of losing the off-ramps no longer bothers me.
They have killed old.reddit now. It forces you (or at least me) to login. Same with regular Reddit. Most threads I get an authwall after the top comment.
(Im now entirely on HN and Lemmy)