Personally I'd be very hesitant to give private blogs my payment details - I guess that's the raison d'etre of sites like medium and substack also.
But I'm pretty hesitant to do that anyway as I don't like recurring payment models. It's not that I don't like paying for things but the recurrent model is a problem for me.
Because of this I don't have any subscriptions in general to news/blog sites, though I do sponsor two people on patreon and I donate monthly to KDE. But everything else gets a big donation at the end of the year.
So perhaps I'm not the audience. I'm just wondering how well you fare with a personal blog. I'm thinking of making one with in depth tech info. It will be unmonetized (and no ads or tracking) but I worry people will not find it so I do the work for nothing :)
So if you manage to successfully monetize one, it means I have a decent chance with a free one too as there'll be an even lower barrier.