Well, it's a register wall, not a pay wall. Agree it's annoying. The real annoying part to me is that Google seems to treat it the same as freely available no-registration content.
There is a monthly quota for free access I believe.
Just block their JS. It is still readable unlike many publishers insisting their site runs like a SPA.
Oh, I just open the link in incognito mode and I can read the full article...