This feels more like an advertisement for bearblog than a meaningful critique. "Have you heard of enshittification? Well I guarantee my free product won't go that way. Sign up today!"
I feel like the site is so aggressively lo-fi but tuned to creating no-frills blogs in the highly portable markdown format, that it's kind of resistant to that kind of thing.
The whole thing seems sincere, and though that's not a guarantee of quality, it seems like an indicator of it.