- The volume and velocity of data and API requests needed for X is much larger than scraping the occasional news article. You'd need a huge number of accounts to make it work.
- X has the technology to reliably detect such accounts unless they are incredibly well "hidden" by e.g. crowsourcing requests through regular accounts with normal browsing behavior
- X has the incentive to reliably detect such accounts as it has shown in the past by shutting off data access. It seems to care much more about this than most news websites
I believe the only reason things like Nitter still work is that it's not yet big enough for X to care about and invest resources into guarding against it, especially with all the other stuff going on at X right now. But it's only a matter of time before that changes.