I have found a book titled Mastering the Core Teachings of the Buddha: An Unusually Hardcore Dharma Book which the author, a Western Buddhist meditation practitioner I think, claimed as an Arahant.
I just read a few of it at a glance. He wrote about method of meditation to attain enlightenment (which is based on Mahasi Sayadaw vipassana method), criticized Theravadin’s 4 stages of enlightenment (Sotapanna up to Arahant) and Mahayanist’s 10 stages of Bodhisattva, but preferred Vajrayana’s 5 stage of enlightenment, and narrated his journey to Arahanthood. Among other things, he also criticized the concept of an enlightened being in Theravada (which defined an Arahant cannot do this and that, as well as he/she should be ordained in 7 days after attaining Arahanthood).
Here is the PDF version of the book: https://daniel-ingram-c4x6.squarespace.com/s/MCTB2-Complete-PDF-Final-copy.pdf
What do yo think? While nowadays Theravadins consider it’s not possible to attain Arahanthood in modern secular age, how about this claim? Thank you.