How many blogs become definitely easy-to-read when you use Reader Mode of iOS Safari, even if they support smartphone!!
Here, the point is "definitely". I think it would be better to incorporate it even partially by reference to this blog, if it becomes definitely easier to read, . When you do it, keep an eye to the balance between the purpose to let articles to read and other purpose.
In the first place, how about designing based on Reader Mode when you design a blog? I believe you can design efficiently when you design a blog based on Reader Mode adding features and decorations on it.
And most of the design of this blog was created for Reader Mode. Even so, I personally feel that the title as well as the text get slightly (very slightly) easier-to-read.