He’s replying on this twitter thread - perhaps someone with an account can ask there and link his comment here?

Here is the actual link, not a link to some weird third-party site that can't be trusted.

rounce 5 hours ago | parent | next [-]

FYI xcancel is just a mirror that allows reading replies without needing an account.

SwellJoe 8 hours ago | parent | prev [-]

Whereas X can be trusted?

Yes? It's the data source, not a third-party. How is this even a question?

	▲	minimaxir 2 hours ago \| parent \| next [-]
		There's pedantic, and then there's needlessly pedantic. xcancel is a valid workaround for X links on Hacker News and is sufficient for original attribution.
	▲	SwellJoe 2 hours ago \| parent \| prev [-]
		X restricts what you can view without logging in. Many folks don't want to log in to X, for obvious reasons. Posting an xcancel link is kinda like folks posting various `archive` URLs to bypass paywalls, work around overloaded servers, etc. That's an extremely common practice here that usually goes without comment.