Austronesian is no longer alone?

Proposals of macrofamilies are interesting, especially when based on data only recently elicited from hitherto-unstudied languages. I’ve come across a paper by Juliette Blevins titled “A Long Lost Sister of Proto-Austronesian?” published in Oceanic Linguistics vol. 46 no. 1 (June 2007) that links two Andaman languages to Austronesian. Its abstract reads:

This paper applies the comparative method to two related languages of the southern Andaman Islands, Jarawa and Onge, leading to the reconstruction of a proto-language termed “Proto-Ongan” (PON). The same method is used to argue that Proto-Ongan may be related to Proto-Austronesian (PAN). Lexical and grammatical evidence suggests that Proto-Ongan and Proto-Austronesian are sisters, daughters of a Proto-Austronesian-Ongan (PAO). The implications of this discovery are wide-ranging, from potential solutions to problems in PAN grammar, to new hypotheses regarding ancient speaker migrations. While few of these implications are examined here, an extended Austronesian phylogeny is proposed in the hope that it will seed new avenues of research, and highlight the potential importance of Andamanese studies in understanding Austronesian prehistory.

Would any scholar of Austronesian like to chime in about how Blevins’s proposal has been received in the community?