can't access due to UK online safety act
A form of protest I assume, assuming he runs no business in the UK and no other reason to think the UK Gov has any interest in policing an .com blog run by someone who doesn't live there nor hosts the website there.
(I'm not against that form of protest per se, but let's be clear about who's doing the blocking)
Or to avoid the fines and/or to avoid integrating some age verification service.
Maybe symbolic since it unlikely the site would be prosecuted, even if they were in violation in some minor form. It is easy to be in violation to my understanding since it does not need to what is posted by the site owner as part of the blog but could be in the comments.
His website links to bdsm (and hosts some very mild art). He has very real concerns and has talked to lawyers about them. I would not call it a protest rather a protective measure.
I wonder if he has consulted with lawyers and authorities from all other 193 countries in the world regarding their laws?